Unit Test #52
Select your answers to the following 5 questions from the popup menus in the right hand column. When you are satisfied with your answers, fill in your name and email address in the spaces provided below the test, and click the "Submit Test" button. Clicking the "Begin Test Again" button will clear all the answers.
Q1:

Find the lower quartile of:
4, 6, 8, 13, 16, 19, 28, 30, 35, 50

A. 6 B .8 C. 13^{}D. 30 
Answer 1:


Q2:

What is the standard deviation of the values in question 1? 
A. 20.9 B. 17.5 C. 4.57 D. 13.9 
Answer 2:


Q3:

The standard deviation of a set of values is 2.
If 3 is added to each value, what is the new standard deviation?

A. 2 B. 5 C. 2.5 D. 0 
Answer 3:


Q4:

Use a calculator to find the standard deviation, to 2 sig. figs., of the frequency distribution:

A. 0.60 B. 0.81 C. 6.0 D. 0.77 
Answer 4:


Q5:

What is the median for the frequency table above? 
A. 5 B. 6 C. 7 D. 10 
Answer 5:


