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QNT 561 Week 4 Individual Assignment - Descriptive Statistics and Interpretation - A+ Guide!

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RUNNING HEAD: Descriptive Statistics and Interpretation 1
Name
Assignment
QNT/561
Date

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RUNNING HEAD: Descriptive Statistics and Interpretation 2
Descriptive Statistics
Age (in years)
The distribution is not normally distributed.
Central Tendency:
Median = 26 years.
Dispersion:
Interquartile Range = 4.
Count:
100
Min/Max:
Min is 18 years; Max is 33 years
Confidence Interval
(alpha = 0.05):
25.318 years to 27.101 years
The histogram is present in Appendix A; the descriptive statistics are present in Appendix B.
Reading Frequency
Thirty-seven percent of the sampled people read books daily, thirty-three percent of the sampled
people read books weekly, and thirty percent of the sampled people read books monthly.
Reading Preference
Sixty-two percent of the people sampled prefer hard cover books while thirty-eight percent of the
people sampled prefer electronic books.
Descriptive Statistics Interpretation
Age
The data is not normally distributed and is bimodal. One hundred people were randomly selected,
and their ages were measured. Their ages were between 18 and 33 years, with a variation of ± 4 years.
Half of the people’s ages lie above 26 years. The middle half of the peoples’ ages are between 22 and 30
years. The mode, or the most frequent age, was 21 years.

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RUNNING HEAD: Descriptive Statistics and Interpretation 3
APPENDIX A
Age Histograms
2
5
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10
4
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5
8
7
1
6
8 8
9 9
6
18
Y R S .
19
Y R S .
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Y R S .
23
Y R S .
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25
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26
Y R S .
27
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28
Y R S .
29
Y R S .
30
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31
Y R S .
32
Y R S .
33
Y R S .
AGE HISTOGRAM
Quantity

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