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Owner: zairexp3
Created: Oct 2, 2019
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Chapter 3 Project
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Chapter 3 Project


Below is the data for the scores recieved on two different versions of a test.

 

Data set 1. 3.3 project   [Info]
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1. Below are the mean, median, and standard deviation of the scores recieved on Version 1 of the test.

Result 1: Version 1 Mean Median SD   [Info]

Summary statistics:


ColumnMeanMedianStd. dev.
Version179.2777788211.262101

Below are the mean, median, and standard deviation of the scores recieved on Version 2 of the test.

Result 2: Version 2 Mean Median SD   [Info]

Summary statistics:


ColumnMeanStd. dev.Median
Version 284.1219519.39998785

 

2. Below is a histogram displaying the frequency of the scores from Version 1 of the test.

Result 3: Histogram for version 1   [Info]
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Below is a histogram displaying the frequency of the scores from Version 2 of the test.

Result 4: Histogram for version 2   [Info]
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3. Below is a pie chart showing the percentages of frequency for the grades recieved on Version 1 of the test.

 

Result 5: Pie Chart With Data for version 1   [Info]
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 Below is a pie chart showing the percentages of frequency for the grades recieved on Version 2 of the test.
 
 

Result 6: Pie Chart With Data for version 2   [Info]
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4. Below is a pie chart showing the number and percentages of passes and fails on Version 1 of the test.

Result 7: Pie Chart With Data for V1 pass/fail   [Info]
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Below is a pie chart showing the number and percentages of passes and fails on Version 2 of the test.

 

Result 8: Pie Chart With Data for v2 pass/fail   [Info]
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5. If I was to recieve an 82 on Version 1 of the test and my friend was to recieve an 82 on Version 2 of the test, my friend who took Version 2 did relatively better. This is because my z-score shows that I was .24 standard deviations above the mean, while their z-score is -.22 standard deviations below the mean.

 

6. Below is the 5 number summary for the scores recieved on Version 1 of the test.

Result 9: 5 Number summary V1   [Info]

Summary statistics:


ColumnMinQ1MedianQ3Max
Version15373.5828898

 

Below is the 5 number summary for the scores recieved on Version 2 of the test.

Result 10: 5 number summary V2   [Info]

Summary statistics:


ColumnMinQ1MedianQ3Max
Version 26477859498

 

7. Below is a box plot for the scores recieved on Version 1 and 2 of the test.

Result 11: Boxplot for Versions   [Info]
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8. Looking at the data in the various charts, we can assume that the tests were not of equal difficulty; on average, more students scored lower on Version 1 than they did on Version 2.

 

HTML link:
<A href="https://www.statcrunch.com/5.0/viewreport.php?reportid=91610">Chapter 3 Project</A>

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