Large Data Sets from Appendix B. In Exercises 25–28, refer to the indicated data set in Appendix B. Use computer software or a calculator to find the range, variance, and standard deviation. Express answers using appropriate units, such as “minutes.”
IQ Scores Refer to Data Set 6 in Appendix B and use the listed IQ scores.
From the given information, the given sample IQ scores are
The following MINITAB instruction set used to find the mean, and median:
1) First enter the given data in a column such as C4
2) Select Stat, then select Basic Statistics and then select Display Descriptive Statistics
3) Enter C4 in the Variables box
4) Click the Statistics button in the dialog box and choose the measures we want to calculate
5) Click Ok.
The calculated range, variance, and standard deviation for the given data are as follows:
Therefore, the calculated range, variance and standard deviation for the given data are 42.00, 174.53, and 13.21 respectively.