Question
The data below represents the IQ scores of 40 college students: IQ scores 105 104 105 109 106 104 105 104 106 106 100 107
The data below represents the IQ scores of 40 college students:
IQ scores |
105 |
104 |
105 |
109 |
106 |
104 |
105 |
104 |
106 |
106 |
100 |
107 |
106 |
101 |
106 |
105 |
105 |
104 |
106 |
107 |
107 |
109 |
105 |
105 |
105 |
106 |
102 |
104 |
107 |
108 |
111 |
109 |
101 |
105 |
104 |
104 |
106 |
106 |
103 |
107 |
Take 30 random samples of 5 data points each (one way: Past the data here http://www.randomizelist.com/ randomize the list and take the first 5 numbers, or use the sampling feature at http://www.brianreedpowers.com/MAT240/stats/descriptiveStats.html), and calculate the average for each of these samples. You will now have 30 sample means. make and post a histogram for your sample means. What is the mean of these means? What is the standard deviation? Does this make sense based on the Central Limit Theorem? Do the sample means follow a normal distribution? What p-value does the normality test give? How and why does this differ from the original data?
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