Z-Score and the Empirical Rule: Learn It 2

Now it’s your turn to try. Let’s load the Movie Runtime data set in the technology to calculate the standard deviation of a data set and then convert values to standardized scores by hand.

Go to the Describing and Exploring Quantitative Variables tool at https://dcmathpathways.shinyapps.io/EDA_quantitative/.

Step 1) Select the Single Group tab.

Step 2) Locate the dropdown under Enter Data and select From Textbook.

Step 3) Locate the drop-down menu under Data Set and select Movie Runtime (G Rated 1990-2016).

Step 4) Under Choose Type of Plot, select the options to create a Histogram and a Dotplot of runtime (in minutes).

question 1

question 2

question 3

Use the mean and the standard deviation you entered in Questions 2 and 3 to answer the following questions.

question 4

question 5