# Question

A quantitative data set has been grouped by using limit grouping with equal-width classes. The lower and upper limits of the first class are 3 and 8, respectively, and the class width is 6.

a. What is the class mark of the second class?

b. What are the lower and upper limits of the third class?

c. Which class would contain an observation of 23?

a. What is the class mark of the second class?

b. What are the lower and upper limits of the third class?

c. Which class would contain an observation of 23?

## Answer to relevant Questions

A quantitative data set has been grouped by using limit grouping with equal-width classes of width 5. The class limits are whole numbers. a. If the class mark of the first class is 8, what are its lower and upper limits? b. ...Refer to Exercise 3.99. In exercise Chebychev’s rule also permits you to make pertinent statements about a data set when only its mean and standard deviation are known. Here is an example of that use of Chebychev’s rule. ...1, 2, 3, 4, 5, 1, 2, 3, 4, 5 a. Obtain the quartiles. b. Determine the interquartile range. c. Find the five-number summary. The U.S. National Center for Health Statistics compiles data on the length of stay by patients in shortterm hospitals and publishes its findings in Vital and Health Statistics. A random sample of 21 patients yielded the ...Researchers in obesity wanted to compare the effectiveness of dieting with exercise against dieting without exercise. Seventy-three patients were randomly divided into two groups. Group 1, composed of 37 patients, was put on ...Post your question

0