Quiz 4

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Question 1

Given the following dataset

    contdata = [1,1,1,2,2,3,4,5]

• What is the mean?
• What is the median?
• What is the mode?

Question 2

Recall the definition of standard deviation: $$ \sqrt{\frac{\sum (x_i-\bar{x})^2}{n}} $$ where \(\bar{x}\) is the mean of the dataset.

• What information, if any, do you gain from knowing one dataset's standard deviation is larger than another dataset's?
• What information, if any, do you gain about the mean by knowing the standard deviation?

Question 3

Make a dataset with at least 5 data points such that the mean is larger than the median. Make another such that the median is larger than the mode.

Question 4

What does correlation represent?

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