#### Description

##### Psy 625 Week 1 Time to Practice

Description

Question

University of Phoenix Material
Time to Practice – Week One
Complete both Part A and Part B below.
Part A
Some questions in Part A require that you access data from Statistics for People Who (Think T hey) 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.
Hospital size (number of beds)
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
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.
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
4.
Suppose you are working with a data set that has some different (much larger or much smaller than the rest of the data) scores. What measure of central tendency would you use and why?
5.
For the following set of scores, compute the range, the unbiased and the biased standard deviations, and the variance. Do the exercise by hand.
31, 42, 35, 55, 54, 34, 25, 44, 35
Why is the unbiased estimate greater than the biased estimate?
6.
Use IBM ® SPSS ® software to compute all the descriptive statistics for the following set of three test scores over the course of a semester. Which test had the highest average score? Which test had the smallest amount of variability?
Test 1
Test 2
Test 3
50
50
49
48
49
47
51
51
51
46
46
55
49
48
55
48
53
45
49
49
47
49
52
45
50
48
46
50
55
53
7.
This practice problem uses the data contained in the file named Ch. 3 Data Set 3. There are two variables in this data set.
Variable
Definition
Height
Height in inches
Weight
Weight in pounds
Using IBM ® SPSS ® software, compute all of the measures of variability you can for height and weight.

Solution ID:523165 | This paper was updated on 26-Nov-2015

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