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Chapter 3 Review Homework Question 6
Chapter 3 Review Homework Question 6
Each of the following three data sets represents the IQ scores of a random sample of adults. IQ scores are known to have a mean and median of 100.
For each data set, compute the mean and median.
What is the mean of the sample of size 5?
What is the mean of the sample of size 12?
What is the mean of the sample of size 30?
What is the median of the sample of size 5?
What is the median of the sample of size 12?
What is the median of the sample of size 30?
For each data set recalculate the mean and median, assuming that the individual whose IQ is 108 is accidently recorded as 180
What is the mean of the new sample of size 5?
What is the mean of the new sample of size 12?
What is the mean of the new sample of size 30?
What is the median of the new sample of size 5?
What is the median of the new sample of size 12?
What is the median of the new sample of size 30?
For each sample size, state what happens to the mean and median.
For each sample size, the mean ________, and the mediam remains mostly constant.
Comment on the role that the number of observations plays in resistance.
- As the sample size increases, the impact of the misrecorded data on the mean remains the same.
- As the sample size increases, the impact of the misrecorded data on the mean decreases.
- As the sample size increases, the impact of the misrecorded data on the mean increases.