Calculate the average of the following numbers: -100, 21, -65, 8, 33, 19, -48 and 15.Round your answer to 4 decimal places.

Using Data Analysis in Excel, calculate the standard deviation of 7, 30, 4, 27, 15, 21, 12 and 1 to the nearest whole number.

Using the numbers listed in the "Boxplot 1" data file, please calculate the first quartile in Excel (to three decimal places).

From the "Boxplot" datafile, which of the following is/are true?

The interquartile range is161

The value of Q1 is 162 and the data are skewed left

The value of Q3 is 323 and the data are skewed right

The value of Q1 is 323 and the data are right skewed

The right whisker for the boxplot is longer than the left whisker

The median is 262 and the data are symmetrical

To study the relationship between job satisfaction and the degree of Mach orientation (the Mach scale measures the degree to which a person believes that others are susceptible to manipulation in interpersonal relations) for department store executives, Gable and Topol (Journal of Retailing, Spring 1988) surveyed 218 department store executives via a postal questionnaire. From this, both a job satisfaction score and a Mach rating were obtained. The authors of the study concluded that those with higher job satisfaction scores are likely to have a lower Mach rating.

Identify the population from which the sample was selected( )

Identify the variables being measured.( )

Identify the sample( )

1.high job satisfaction and low Mach orientation

2.degree of Mach orientation

3.all retail employers

4.all executives

5.level of job satisfaction

6.job satisfaction and degree of Mach orientation

7.218 retail employers

8.all department store executives

9.218 department store executives