Calculus and Above

Calculus Questions? Ask a Mathematician for Answers ASAP

Connect one-on-one with {0} who will answer your question

1. Which of the following...

1. Which of the following statements is true?

A. When taking a sample from the population, the variable involved will always be qualitative.

B. A population is the object upon which we collect data.

C. In a true census, no inferential statistics can be done, because the entire population is the sample.

D. The definition of a census is the decennial census of the United States of America.

2. In a sample with mean x = 12 and standard deviation s = 3.5, a data point at 16.8 would have what sample z-score?

A. 1.37

B. 1.4

C. 4.8

D. We can't know the answer without knowing the population mean μ and standard deviation σ.

3. Use the following data sample to answer the question. 4, 14, 6, 9, 21, 3, 7, 10

What is the variance of this data sample?

A. 4.31

B. 5.90

C. 34.79

D. 243.5

4. Use the following data sample to answer the question. 4, 14, 6, 9, 21, 3, 7, 10

What is the standard deviation of this data sample?

A. 4.31

B. 5.90

C. 34.79

D. 243.5

5. Consider the following chart:

Which of the measures of central tendency would best represent that data?

A. Median

B. Mode

C. Mean

D. Standard deviation

6. To answer the question, refer to the following list of raw data.

63, 71, 72, 77, 77, 78, 86, 77, 88, 88

What is the mean for the data?

A. 77

B. 77.5

C. 88

D. 77.7

7. To answer the question, refer to the following list of raw data. 63, 71, 72, 77, 77, 78, 86, 77, 88, 88

What is the mode for the data?

A. 88

B. 77

C. 77.7

D. 77.5

8. To answer the question, refer to the following data.

Ten students were sampled at random from a student population. Each was asked how many courses he or she was planning on studying in the upcoming year. The following is a list of the reported data values: 1, 2,

2, 3, 4, 5, 5, 5, 5, 6

What is the variance for the data values?

A. 2.844

B. 2.56

C. 1.687

D. 1.6

9. A particular sample contains 50 data values. According to Chebyshev's theorem, which of the following is the number of values you would expect to fall within 3.0 standard deviations of the mean?

A. 45

B. 35

C. 5

D. 25

10. When a sample is taken from a larger population, this suggests that which of the following will be used?

A. Descriptive statistics

B. Inferential statistics

C. Computation of a sample mean

D. Independent events

11. Which of the following are parameters of a population?

A. σ and n

B. μ and σ

C. α and σ

D. μ and x

12. A population is a collection of _______ about which we will measure certain characteristics or properties, called _______.

A. individuals, sample values

B. experimental units, variables

C. people, traits

D. data, numbers

13. Which of the following statements about interpreting standard deviation is true?

A. Neither Chebyshev's Rule nor the Emprical Rule require any assumptions about the frequency distribution.

B. Neither the Empirical Rule nor Chebyshev's Rule can be applied to data unless the frequency distribution is mound-shaped and symmetrical.

C. Chebyshev's Rule can't be applied unless the frequency distribution is mound-shaped and symmetric. The Empirical Rule can

be applied to any data set, regardless of the shape of its frequency distribution.

D. The Empirical Rule can't be applied unless the frequency distribution is mound-shaped and symmetric. Chebyshev's Rule can be applied to any data set, regardless of the shape of its frequency distribution.

14. Given the data set 3, 6, 2, 9, –1, 0, compute Σ(x + 1)2.

A. 137

B. 175

C. 625

D. 25

15. When creating a histogram, it's important to ensure that the classes of data satisfy which properties?

A. They must be mutually exclusive and exhaustive.

B. They must include each interval on the number line.

C. No requirements are made; the individual creating the graph is free to choose any classes.

D. They must be all the same size.

16. Which of the following involves inferential statistics as opposed to descriptive statistics?

A. A class of 50 statistics students earned an average grade of 73.5.

B. A local cable system, using a sample of 500 subscribers, estimates that 40 percent of its subscribers watch a premium channel

at least once per day.

C. The city business office reported 35 building permits for new single-family housing units.

D. The Alcohol, Tobacco and Firearms department reported that Houston had 1,791 registered gun dealers in 1997.

17. Several ways to make a bar graph deceptive appear below. Which of these is sometimes used to exaggerate differences from one data value to the next?

A. Making the graph shorter than it needs to be

B. Making the graph taller than it needs to be

C. Starting the vertical axis at a point greater than zero

D. A gap in the vertical axis

18. If a great many data values cluster to the left of a data distribution, which then tails off to the right, the distribution is referred to as

A. leftward skewed.

B. rightward skewed.

C. normal.

D. uniform.

19. What is the difference between a histogram and a bar chart?

A. A histogram and a bar chart both reflect qualitative data.

B. The adjacent rectangles in a bar chart have a gap, while those for a histogram don't.

C. The adjacent rectangles in a histogram have a gap, while those for a bar chart don't.

D. A histogram reflects qualitative data, while the bar chart represents quantitative data.

20. Which of the following statements is true about a stem-and-leaf plot?

A. It separates data at the decimal point, creating horizontal rows whose values are close together.

B. Stem-and-leaf plots are histograms whose bars have been arranged in decreasing order of frequency.

C. It involves creating columns of dots, one for each datum in the sample.

D. It uses vertical bars to illustrate a probability distribution.

A. When taking a sample from the population, the variable involved will always be qualitative.

B. A population is the object upon which we collect data.

C. In a true census, no inferential statistics can be done, because the entire population is the sample.

D. The definition of a census is the decennial census of the United States of America.

2. In a sample with mean x = 12 and standard deviation s = 3.5, a data point at 16.8 would have what sample z-score?

A. 1.37

B. 1.4

C. 4.8

D. We can't know the answer without knowing the population mean μ and standard deviation σ.

3. Use the following data sample to answer the question. 4, 14, 6, 9, 21, 3, 7, 10

What is the variance of this data sample?

A. 4.31

B. 5.90

C. 34.79

D. 243.5

4. Use the following data sample to answer the question. 4, 14, 6, 9, 21, 3, 7, 10

What is the standard deviation of this data sample?

A. 4.31

B. 5.90

C. 34.79

D. 243.5

5. Consider the following chart:

Which of the measures of central tendency would best represent that data?

A. Median

B. Mode

C. Mean

D. Standard deviation

6. To answer the question, refer to the following list of raw data.

63, 71, 72, 77, 77, 78, 86, 77, 88, 88

What is the mean for the data?

A. 77

B. 77.5

C. 88

D. 77.7

7. To answer the question, refer to the following list of raw data. 63, 71, 72, 77, 77, 78, 86, 77, 88, 88

What is the mode for the data?

A. 88

B. 77

C. 77.7

D. 77.5

8. To answer the question, refer to the following data.

Ten students were sampled at random from a student population. Each was asked how many courses he or she was planning on studying in the upcoming year. The following is a list of the reported data values: 1, 2,

2, 3, 4, 5, 5, 5, 5, 6

What is the variance for the data values?

A. 2.844

B. 2.56

C. 1.687

D. 1.6

9. A particular sample contains 50 data values. According to Chebyshev's theorem, which of the following is the number of values you would expect to fall within 3.0 standard deviations of the mean?

A. 45

B. 35

C. 5

D. 25

10. When a sample is taken from a larger population, this suggests that which of the following will be used?

A. Descriptive statistics

B. Inferential statistics

C. Computation of a sample mean

D. Independent events

11. Which of the following are parameters of a population?

A. σ and n

B. μ and σ

C. α and σ

D. μ and x

12. A population is a collection of _______ about which we will measure certain characteristics or properties, called _______.

A. individuals, sample values

B. experimental units, variables

C. people, traits

D. data, numbers

13. Which of the following statements about interpreting standard deviation is true?

A. Neither Chebyshev's Rule nor the Emprical Rule require any assumptions about the frequency distribution.

B. Neither the Empirical Rule nor Chebyshev's Rule can be applied to data unless the frequency distribution is mound-shaped and symmetrical.

C. Chebyshev's Rule can't be applied unless the frequency distribution is mound-shaped and symmetric. The Empirical Rule can

be applied to any data set, regardless of the shape of its frequency distribution.

D. The Empirical Rule can't be applied unless the frequency distribution is mound-shaped and symmetric. Chebyshev's Rule can be applied to any data set, regardless of the shape of its frequency distribution.

14. Given the data set 3, 6, 2, 9, –1, 0, compute Σ(x + 1)2.

A. 137

B. 175

C. 625

D. 25

15. When creating a histogram, it's important to ensure that the classes of data satisfy which properties?

A. They must be mutually exclusive and exhaustive.

B. They must include each interval on the number line.

C. No requirements are made; the individual creating the graph is free to choose any classes.

D. They must be all the same size.

16. Which of the following involves inferential statistics as opposed to descriptive statistics?

A. A class of 50 statistics students earned an average grade of 73.5.

B. A local cable system, using a sample of 500 subscribers, estimates that 40 percent of its subscribers watch a premium channel

at least once per day.

C. The city business office reported 35 building permits for new single-family housing units.

D. The Alcohol, Tobacco and Firearms department reported that Houston had 1,791 registered gun dealers in 1997.

17. Several ways to make a bar graph deceptive appear below. Which of these is sometimes used to exaggerate differences from one data value to the next?

A. Making the graph shorter than it needs to be

B. Making the graph taller than it needs to be

C. Starting the vertical axis at a point greater than zero

D. A gap in the vertical axis

18. If a great many data values cluster to the left of a data distribution, which then tails off to the right, the distribution is referred to as

A. leftward skewed.

B. rightward skewed.

C. normal.

D. uniform.

19. What is the difference between a histogram and a bar chart?

A. A histogram and a bar chart both reflect qualitative data.

B. The adjacent rectangles in a bar chart have a gap, while those for a histogram don't.

C. The adjacent rectangles in a histogram have a gap, while those for a bar chart don't.

D. A histogram reflects qualitative data, while the bar chart represents quantitative data.

20. Which of the following statements is true about a stem-and-leaf plot?

A. It separates data at the decimal point, creating horizontal rows whose values are close together.

B. Stem-and-leaf plots are histograms whose bars have been arranged in decreasing order of frequency.

C. It involves creating columns of dots, one for each datum in the sample.

D. It uses vertical bars to illustrate a probability distribution.

Show More

Show Less

Was this answer helpful?

Describe your issueThe assistant will guide you

Chat 1:1 with a tutorLicensed Experts are available 24/7

100% satisfaction guaranteeGet all the answers you need

Related Calculus and Above Questions

1. Which of the following statements about the sampling

1. Which of the following statements about the sampling distribution of the sample mean, x-bar, is true? Check all that apply.The distribution is normal regardless of the shape of the population distr… read more

9 A population of values has a distribution with μ = 116.2 μ

THIS IS QUESTION #9 A population of values has a distribution with μ = 116.2 μ = 116.2 and σ = 13.4 σ = 13.4 . You intend to draw a random sample of size n = 168 n = 168 .According to the Central Limi… read more

Question 1 : Data that are collected by an individual

Question 1 : Data that are collected by an individual through personally planned experimentation or observation are: a.Primary data b.Quantitative data c.Secondary data d.Variables Question 2 : Which … read more

1. What is the purpose of sampling? (Exam 250713)A. To

1. What is the purpose of sampling? (Exam 250713) A. To estimate a target parameter of the population B. To verify that the population is approximately normally distributed C. To achieve a more accura… read more

Using the telephone numbers listed in your local directory

Using the telephone numbers listed in your local directory as your population, randomly obtain 20 samples of size 3. From each telephone number identified as a source, take the fourth, fifth, and sixt… read more

For problems 1 – 3 you are to use the p-value approach to test

For problems 1 – 3 you are to use the p-value approach to test the hypotheses where σ is known. 1. A university advises parents of incoming freshmen that the average cost of textbooks is typically gre… read more

For ryan. I have one more request about that exam and would

For ryan. I have one more request about that exam and would like to know what's a good time to post it.… read more

Question 1 Using the telephone numbers listed in your local

Question 1 Using the telephone numbers listed in your local directory as your population, randomly obtain 20 samples of size 3. From each telephone number identified as a source, take the fourth, fift… read more

Identify the null hypothesis Ho & the alternative hypothesis H1

Identify the null hypothesis Ho and the alternative hypothesis H1. A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO, p, is less than 1 in every one thousa… read more

Business Statistics-Data:description,collection and sampling1.

Business Statistics-Data:description,collection and sampling 1. To answer the question, refer to the following list of raw data. 63, 71, 72, 77, 77, 78, 86, 77, 88, 88 What is the mode for the data? A… read more

FOR GURU ONLY --- FOR GURU ONLY!!! Here are the first 40.

FOR GURU ONLY --- FOR GURU ONLY!!! Here are the first 40. As per your last e-mail of only getting half of what you charge, I'll pay $50 for this first 40 and $50 for the second 40 questions. If all is… read more

For problems 1 – 3 you are to use the p-value approach to test

For problems 1 – 3 you are to use the p-value approach to test the hypotheses where σ is known. 1. A university advises parents of incoming freshmen that the average cost of textbooks is typically gre… read more

Question 11. Using the telephone numbers listed in your

Question 1 1. Using the telephone numbers listed in your local directory as your population, randomly obtain 20 samples of size 3. From each telephone number identified as a source, take the fourth, f… read more

Manual Banales, Marketing Director of Plano Power Plants

Manual Banales, Marketing Director of Plano Power Plants, Inc.'s Electrical Division, is leading a study to identify and assess the relative importance of product features. Manuel directs his staff to… read more

1) The main purpose of descriptive statistics is to A.

1) The main purpose of descriptive statistics is to A. summarize data in a useful and informative manner B. make inferences about a population C. determine if the data adequately represents the popula… read more

2)Which of the following hypothesis tests use a z test statistic? A)

2)Which of the following hypothesis tests use a z test statistic? A) Matched Pairs B) Single Proportion C) Two Proportions D) Goodness-of-Fit E) Single Mean: σ Known F) Independence G) Two Variances H… read more

CASE STUDY EXERCISE 2: Individual incomes. The Data Appendix

CASE STUDY EXERCISE 2: Individual incomes. The Data Appendix describes the file individuals, which contains the total incomes of 55,899 people between the ages of 25 and 65. We will illustrate samplin… read more

exam scores of 40 students in a statistics class are shown.

exam scores of 40 students in a statistics class are shown. a Estimate the mean and standard deviation from the sample. b Assuming that the data are from a normal distribution, define bins by using me… read more

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.

JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.

Web sites like justanswer.com/legal

...leave nothing to chance.

...leave nothing to chance.

Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.

Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.

I will tell you that...the things you have to go through to be an Expert are quite rigorous.

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

Los Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

Hesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

Kernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

Woodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

Elkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

Dallas, TX

< Previous | Next >

Mr. Gregory White

Master's Degree

114 satisfied customers

M.A., M.S. Education / Educational Administration

SusanAthena

Master's Degree

102 satisfied customers

Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.

Dr Arthur Rubin

Doctoral Degree

97 satisfied customers

Ph.D. in Mathematics, 1978, from the California Institute of Technology, over 20 published papers

JACUSTOMER-yrynbdjl-

Master's Degree

42 satisfied customers

I have a MS in Mathematics and I have taught Mathematics for 10 years at the college level.

Don

Master's Degree

29 satisfied customers

M.S. Astronautical Engineering. Math/Sci/Comp Tutor

Kofi

PhD in Statistics

7,955 satisfied customers

Masters in Mathematics and Statistics

Sandhya_sharma

Master's Degree

5,547 satisfied customers

I hold M.Sc and M.Phil degrees in math and have several years of teaching experience.

< Previous | Next >

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.