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Osbert12, Master's Degree
Category: Math Homework
Satisfied Customers: 2908
Experience:  Statistics
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# ra - es

### Customer Question

What is the level of measurement for each of the following variables?
a. Student IQ ratings
b. Distance students travel to class
c. The jersy numbers of a sorority soccer team
d. A classification of students by state of birth
e. A ranking of students as freshmen, sophmore, junior, and senior
f. Number of hours students study per week
Submitted: 4 years ago.
Category: Math Homework
Expert:  jkcpa replied 4 years ago.
Hi,

Thanks for the question.

1. Student IQ ratings. Interval-Level
2. Distance students travel to class. Ratio-Level
3. The jersey numbers of a sorority soccer team. Nominal-Level
4. A classification of students by state of birth. Nominal-Level
5. A ranking of students as freshman, sophomore, junior, and senior. Ordinal-Level
6. Number of hours students study per week. Ratio-Level
Hope this helps!
Customer: replied 4 years ago.
I have those exact examples...would you be willing to help with more of my statistics work and get compensated for it?
Expert:  jkcpa replied 4 years ago.
OK, but I would have to see the questions first before I can let you know if I can answer them.
Customer: replied 4 years ago.

1. A set of data contains 53 observations. The lowest value is 42 and the largest is 129. The data are to be organized into a frequency distribution.

(a) How many classes would you suggest?

(b) What would you suggest as the lower limit of the first class:

Expert:  jkcpa replied 4 years ago.
Sorry, I am not able to answer this last question. Please post it as a new post in the Math category. Thanks.
Expert:  Osbert12 replied 4 years ago.

First I will mention that there are not unique answers for your questions. The number of classes is generally set between 5 and 20. Since 53 observations is relatively small, I would set the number of classes to be a relatively small number, such as 7. This will yield an average of approximately 8 observations per class.

I would set the lower limit of the first class at 40.

(a) 7

(b) 40

Osbert

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