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Owner: kmm17k
Created: Nov 28, 2017
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Responses to Soda Part 3
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Data set 1. Responses to Soda survey   [Info]
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Result 1: Resample Statistics: Qualitative   [Info]
Statistic: prop(Gender,Female)
ObservednMeanStd. dev.2.5th per.5th per.50th per.95th per.97.5th per.
0.49852507300.497345130.0313870120.41002950.460176990.492625370.560471980.57227139

Qualitative Variable: Gender

Significance level: 0.05 or 95%

sample size: 30

margin of error: 0.011 = 2s/(square root) of n = 2(0.03)/5.48

confidence interval: 0.5 ± 0.011 ;

Level of Significance is at 0.05 or 95%: 0.489 < P < 0.511

Result 2: Resample Statistics: Qualitative (Distribution)   [Info]
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The mean of the distribution is .0497. This is in between of the 0.45 and 0.5 brackets. The graph follows a normal distribution, however it is slightly left skewed, since more data is located on the right side. 

Result 3: Resample Statistics 1: Quantitative (Age)   [Info]
Statistic: mean(Age)
ObservednMeanStd. dev.2.5th per.5th per.50th per.95th per.97.5th per.
30.3480653030.2406950.8215018928.29203528.91083130.13353631.85545731.967262

First Quantitative Variable: Age

Sample size: 30

Margin of Error: 0.3 = 2s/(square root) of n = 2(0.82)/5.48

The confidence interval is 95%. There is a high certainty that the true sample mean lies between 30.54 and 29.94.

Result 4: Resample Statistics 1 : Quantitative (Age)   [Info]
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The data is normally distributed. It is a left-skewed, meaning most of the data is on the right side of the graph. you can see the mean of data (thin red line) is in the highest peaked subsection and lies between the intervals of 30 and 31. A bigger sample size may shift the distribution to a bell curve.

Result 5: Normal Calculator 1: Quantitative (Age)   [Info]
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You can see that 18.34% of the data falls below the data value of 29.5. 

Result 6: Resample Statistics 2: Quantitative (Soda)   [Info]
Statistic: mean(Soda)
ObservednMeanStd. dev.2.5th per.5th per.50th per.95th per.97.5th per.
18.8958213018.5809091.736758515.4886915.52296118.71174421.29159221.579394

Second Quantitative Variable: Soda

Sample size: 30 

Margin of Error: 0.64 = 2s/(square root) of n = 2(1.74)/5.48

The cofidence interval is 95%. There is a high certainty that the true sample mean lies between 19.22 and 17.94.

Result 7: Resample Statistics 2: Quantitative (Soda)   [Info]
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The data is normally distributed. It is a right-skewed, meaning most of the data is on the left side of the graph. you can see the mean of data (thin red line) is in the second highest peaked subsection and lies between the intervals of 18 and 20. A bigger sample size may shift the distribution to a bell curve. 

Result 8: Normal Calculator 2: Quantitative (Age)   [Info]
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You can see that 86.50% of the data falls below the data value of 20.5. 

HTML link:
<A href="https://www.statcrunch.com/5.0/viewreport.php?reportid=74116">Responses to Soda Part 3 </A>

Comments
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By xg15
Nov 27, 2017

Need details about margin of error and confidence interval.
significance level=1-confidence level
The confidence interval is an interval constructed by lower bound and upper bound such that we have 95% confidence to say that the population parameter is in this interval.

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