Open a web browser and go to the web address below (the website is linked in Bla

Question

Open a web browser and go to the web address below (the website is linked in Blackboard). https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/exploring_standard_deviation_1 The orange dots represent sample data values. When two data values are the same, they stack one on top of the other to show frequency as a height. You can click and drag the orange dots to change the values and see the impact that has on the sample mean (x ) and sample standard deviation (s).

Answer the following questions. Don’t click the Check Answer button until after you’ve answered the questions on this handout.

Questions Drag just one point around. What happens to the sample mean when you drag it to the left? To the right? What happens to the sample standard deviation?

Explanation / Answer

The sample mean when you drag it to the left is goes to increase to less than zero

The sample mean when you drag it to the right is goes to increase in greater then zero

The sample standard deviation is also increase and decrease.

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