1. Which of the following are categorical variables? I. hair color II. job III. height A. I and II only B. II and III only C. I and III only D. I, II, and III E. None of them

2. The mean annual income of 20 women is $22,000 and the mean annual income of 10 men is $19,000. What is the mean annual income of the combined group of 30 people? A. $19,000 B. $20,000 C. $21,000 D. $22,000 E. Cannot be determined.

3. The median annual income of 20 women is $22,000 and the median annual income of 10 men is $19,000. What is the median annual income of the combined group of 30 people? A. $19,000 B. $20,000 C. $21,000 D. $22,000 E. Cannot be determined.

The manager of a specialty outdoor store has gathered the following data concerning sales (in hundreds of dollars) of all the items sold by the store in the previous 2 months: Item Type Number Sold Sales $(00s) Pants and jackets 150 125 Hats and gloves 30 15 Socks and shoes 75 400 Skiing hardware 25 65 Climbing hardware 70 45

4. Using the data along with appropriate computations, which of the following could not be constructed? A. A relative frequency table based on the numbers sold of different item types. B. A pie chart for the percentages of sales of different item types. C. A bar chart for the sales of hardware for each of the two months. D. A histogram for the sales of different item types

5. What is the percentage of dollar sales for hardware? A. 16.9% B. 27.1% C. 10% D. 6.9%

6. Which of the following would be the best choice for showing the share of sales due to each Item Type? A. Mode B. Median C. Frequency table D. Relative frequency table

7) The following table shows the height in a class. 124 135 121 124 137 146 158 130 132 113 111 138 141 143 153 144 (a) What is the range of the height? (b) With the number of classes is 5, what is the class interval (width)? (c) Compute the frequency table and draw the histogram to display the data above.

8) The table below shows the sales price with 30 samples. 36995 34995 31995 25995 21995 29900 28995 28995 35495 41575 30995 31900 25995 24995 26995 28995 27995 29800 31995 28995 27995 27900 28900 34995 31995 41995 35995 32900 28900 30995 (a) Calculate the mean, mode and median. (b) With the result on part (a), is the data symmetric, right-skewed or left-skewed? (c) Calculate the range, interquartile range, sample standard deviation. (d) Draw the box plot for the data.