1) Identify each of the following as examples of nominal, ordinal,
interval, or ratio scales of...
1) Identify each of the following as examples of nominal, ordinal, interval, or ratio scales of measurement.Submitted: 7 years ago.Category: Calculus and Above
1. A poll of registered voters in Florida asking wich candidate they support
2. The lenght of time required for a wound to heal when using they support
3. The number of telephone calls at a switchboard for five minute period
4. The distance first-year college football players can kick a ball
5. Mental health diagnoses present in an elderly population
6. The rankings of employees on their job performance
2) Two undred raffle tickets are sold. Your friend has five people in her family who each bought two raffle tickets. What is the probability that someone from her family will win the raffle?
3) A psychologist measures units of change for a memory test after students are given an opportunity to sleep only four hours. The following change units were obtained: 7, -12, 4, -7, 3, -10. Find the a) mean, b) median, c) standard deviation, e) range, and f) variance.
4) Suppose you want to figure out what to do with your degree in psychology. You ask some fellow students from your psychology program who recently graduated to find out what they are doing with their degree and how much it pays. What type of sampling is this? What are the limitations of this sampling approach?
5) Variables in which the values are categories are known as:
6) Before the researchcher can conduct a statistical test, the research question must be traslated into:
A testable hypothesis
7) The hypothesis stating that there are no differences, effects, or relationships is:
The alternative hipothesis
The baseline hypothesis
The null hypothesis
The reasonable hypothesis
8) A group of students made the following scores on a 10-item quiz in psychology statistica: (5, 6, 7, 7, 7, 8, 8, 9, 9, 10, 10) what is the mean score?
9) A group of students made the following scores on a 10-item quiz in psychological statistics: (5, 6, 7, 7, 7, 8, 8, 9, 9, 10, 10) what is the median score?
10) A group of students made the following scores on a 10-item quiz in psychological statistic: (5, 6, 7, 7, 7, 8, 8, 9, 9, 10, 10) What is the mode?
11) A group of sutedents made the following scores on a 10-item quiz in psychological statistics ( 5, 6, 7, 7, 7, 8, 8, 9, 9, 10, 10) What is the range of score?
12) A group of students made the following scores on a 10-item quiz in psychological statistics: (5, 6, 7, 7, 7, 8, 8, 9, 9, 10, 10) What is the variance, treating these scores as a sample?
13)The standard normal distribution has all the following properties EXCEPT:
The mean, mode, and median are all equal
The total area under the curve equal 1
The curve is specified by two parameters, the mean and the standard deviation
The curve extend to + and - 3 standard deviations from the mean
14) According to the Empirical Rule, approximately % of the data in a normal distribution will fall within #1 standard deviation of the mean:
15) In statistical computations, the number of values that are free to vary is known as:
Degree of freedom
16) Which of the following reflects a Type I error?
Rejecting the null hypothesis
Rejecting the null hypothesis when in reality the null hypothesis is false
Accepting the null hypothesis when in reality the null hypothesis is true
Accepting the null hypothesis when the null hypothesis is false
17) Which type of sampling is used when the experimenter asks 5 area doctors to refer pregnant women to this astudy and accepts all women who offer to be in this study?
18) In our statistical equations, n refers to:
number of subjects
19) Which of the followingis true regarding alpha?
It is also known as the level of significance
value is set by the researcher
Value is equal to the probability of a type I error
All of the above are true
20) Macy proposes that boys who play sports are viewed as more attractive than boys who do not play sports. What is her null hypothesis?
Boys who plays spors are not viewed as more attractive than boys who do not play sports
Playing sports will influence how attractively boys are viewed
Boys who play sports are more attractive than girls who play sports
There can be no null hypothesis
21) You calculate a t of 2.38 and note that the tablet value for .01 is 3.22 and for .05 is 2.19. You would conclude that the null hypothesis can be:
Accepted at the .05 level
Rejected at the .05 level
None of the above
22) A researcher is studying political conservatism among 11 engineering students and 11 humanities students. The number of degrees of freedom for t test is:
23) A test for dependent groups should be used instead of a test for independent samples:
If each participant is measured twice
Whenever there are equal numbers of subjects in each group
Whenever there are only two groups
All of the above
24) In a normal distribution, what percent of the population falls within one and two standard deviations of the mean?
25) Which of the following is more affected by extreme scores?
None of the above
26) On a histogram, what does the vertical (y) axis refer to?
27) Which statistic refers to the average amount by which the scores in the sample deviate from the mean?
28) Assume a normal distribution for N = 300. How many cases would one sxpect to find between + 1 and -1 standard deviations around the mean?
29) A z score of zero tells us that the score is at the of the distribution.
None of the above since z cannot be zero
30) In a unit normal curve, what goes on the x axis?
31) Which of the following is a measure of variability?
All of the above
32) The only measure of central tendency can be found for nominal data is the:
33) If the probability of event A is 0.05 and the probability of event B is 0.35 and the probability of A and B occurring together is 0.25, then the probability of A or B is:
34) A researcher knows that the average distance commuting students live from campus was previously 8.2 miles. Because of the rising prices of the gasoline, the research wants to test the claim that commuting students now live closer to campus. What is the correct alternative hypothesis?
The new mean distance is 8.2 miles.
The new mean distance is less than or equal to 8.2 miles.
The new mean distance is less than 8.2 miles.
The new mean distance is greater than or equal to 8.2 miles.