Time to Practice – Week One
Part A
Some questions in Part A require that you access data from Statistics for People Who (Think They) Hate Statistics. This data is available on the student website under the Student Test Resources link.
1. By hand, compute the mean, median, and mode for the following set of 40 reading scores:
SUMMARY
31
32
43
42
24
34
25
44
23
43
24
36
25
41
23
28
14
21
24
17
25
23
44
21
13
26
23
32
12
26
14
42
14
31
52
12
23
42
32
34
2. Compute the means for the following set of scores saved as Ch. 2 Data Set 3 using IBM® SPSS® software. Print out a copy of the output. (Please refer to attachment)
Hospital size (number of beds)
Infection rate (per 1,000 admissions)
234
1.7
214
2.4
165
3.1
436
5.6
432
4.9
342
5.3
276
5.6
187
1.2
512
3.3
553
4.1
Mean is 335.1
Mean is 3.72
3. You are the manager of a fast food store. Part of your job is to report which special is selling best to the boss at the end of each day. Use your knowledge of descriptive statistics and write one paragraph to let the boss know what happened today. Use the following data. Do not use IBM® SPSS® software to compute the statistics needed; rather, do it by hand. Include a copy of your work. PLEASE REFER TO APPENDIX FOR WORK.
Special number
Sold
Cost
Huge Burger
20
$2.95
Baby Burger
18
$1.49
Chicken Littles
25
$3.50
Porker Burger
19
$2.95
Yummy Burger
17
$1.99
Coney Dog
20
$1.99
Total specials sold
119
According to the sales today, the top three items that sold the most were the Huge Burger, Coney Dog, and Chicken Littles. Based on the numbers, the store made 87.50 from the 25 chicken littles sold. In combination, the huge burger and coney dogs together made 98.80. In referencing the chart provided in the Appendix, all the items sold well, but the best-selling item is the chicken littles.
4. Suppose you are working with a data