Benjamin owns a small Internet business. Besides himself, he employs nine other people. The salaries earned by the employees are given next in thousands of dollars (Benjamin’s salary is the largest, of course): 30, 30, 45, 50, 50, 50, 55, 55, 60, 75 Determine the range, population variance, and population standard deviation for the data.

A local store owner is interested in finding the mean age of her customers. She randomly surveys 82 customers and records their age. Identify the population, sample, variable, type of variable, parameter, and statistic.

The heights, in inches, of the four members of a barbershop quartet of singers are listed below. 72,68,67,73 Find the population variance for this data set. Round to one decimal place if necessary.

After giving a statistics exam, professor Dang determined the following five-number summary for her class results: 60 68 77 89 98. Use this information to draw a box plot of the exam scores

The ages in years of a random sample of shoppers at a gamming store are shown. 12, 17, 23, 13, 20, 16, 20, 18, 13, 18. Find the range, mean, variance and standard deviation.

Find the mean for the following group of data items. 74, 71, 73, 66, 71, 77 The mean is 72. (Type an integer or a decimal.)

Each of the 5 cats in a pet store was weighed. Here are their weights (in pounds). 13, 12, 5, 12, 9 Find the median and mean weights of these cats. If necessary, round your answers to the nearest tenth. (a) Median: pounds X Ś ? (b) Mean: pounds

Run the descriptive statistics for hrs/week of exercise.  Include the mean, median, quartiles, min, max, standard deviation and IQR.  First do this for hrs/week of exercise overall.  Copy and paste the values below.  Then redo this splitting up the data by sex.  Copy and paste that below too.  What similarities and/or differences do you see? Age Gender Height Arm Length Number Siblings Birth Order Handedness Number Classes Number Credits Hrs. Exercise Athlete at Broome Hrs. TV Award Pulse Number Piercings Facebook Friends Followers on Instagram Tattoo Division Local section 18 f 63 27.5 2 3 r 4 14 1.5 n 3 NP 74 2 82 72 n HS y 4 19 m 74 31.5 4 5 r 4 11 5 n 1.5 O   0 600 700 n STEM y 4 17 f 66 29.2 2 2 l 6 15 5 y 21 NP 64 2 1801 1370 n HS y 4 18 f 66 30 5 5 r 4 12 30 n 15 NP 91 1…

Consider the data set: 7 8 4 2 1 3 9 3   Find the mean:   (Round your answer to 3 decimal places if necessary) Find the median:     (Round your answer to 3 decimal places if necessary)

A sales manager recorded the number of sales made by each of the 300 salespeople working athis chain of furniture outlet stores on a Saturday and created the following table.# Sales (bins) Proportion of salespeople in this bin0 – 3 0.053 – 6 0.156 – 9 0.30 9 – 12 0.3512 -15 0.15a. What is the unit of observation in this sample?b. What is the variable collected?c. Draw and label the histogram for this dataset.d. Which is the modal category?e. Calculate the proportion of the salespeople made 9 or more sales.f. Calculate the number of salespeople who made between 0 and 9 sales.