Question

PSY-380-Introduction to Probability and Statistics

A study was done to explore the number of chocolate bars consumed by 16-year-old girls in a month's time. The results are shown below.

Number of Chocolate Bars Consumed

56

46

12

62

39

24

59

51

39

52

28

41

10

64

27

0

34

5

55

32

42

24

14

63

1

63

52

58

52

26

Use the data from the chocolate bar study to answer the following questions. Use SPSS for all calculations. Copy and paste the SPSS output into the word document as well as typing the appropriate symbol with the answer.

a) Identify the level of measurement used in this study.

b) Create a frequency table with six classes.

c) Create a histogram based on the Frequency table in problem 2.

d) Find the mean, median, and mode of the number of chocolate bars consumed by 16-year-old girls in a month.

e) Find the variance and standard deviation of the number of chocolate bars consumed by 16-year-old girls in a month.

Answer 1

Given data

Number of Chocolate Bars Consumed 0 1 5 10 12 14 24 24 26 27 28 32 34 39 39 41 42 46 51 52 52 55 56 58 58 59 62 63 63 64

a)Since this data is providing only comperision between the day how many chocklet she is eating so it is a ordanery level of measurement

b)Frequency table

class	frequency
0-11	4
11-22	2
22-33	6
33-44	5
44-55	4
55-66	9

c)Histogram for this data is

d)From the data

Number of sample (n)=30

                 Mean

median =middlepart of the data since there are total 30 samples availableso median will be

mode is the sample comes most of the time =24,39,52,58,63

e)variance

Standard deviation