{"id":1221,"date":"2022-04-07T22:38:39","date_gmt":"2022-04-07T22:38:39","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/exemplarstatistics\/?post_type=chapter&p=1221"},"modified":"2022-05-20T16:45:26","modified_gmt":"2022-05-20T16:45:26","slug":"comparing-variability-of-data-sets-forming-connections-2","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/exemplarstatistics\/chapter\/comparing-variability-of-data-sets-forming-connections-2\/","title":{"raw":"Comparing Variability of Data Sets: Forming Connections 2","rendered":"Comparing Variability of Data Sets: Forming Connections 2"},"content":{"raw":"

Variability<\/h3>\r\nLet's use a data set of movie runtimes to explore variability using technology. Follow the directions below to display the descriptive statistics for the database: Movie Run Time, and use the results to answer Questions 2 - 4 below.\r\n
\r\n\r\nGo to the Describing and Exploring Quantitative Variables tool at https:\/\/dcmathpathways.shinyapps.io\/EDA_quantitative\/<\/a>.\r\n

Step 1) Select the Several Groups<\/strong> tab.<\/p>\r\n

Step 2) Locate the drop-down menu under Enter Data<\/strong> and select From Textbook<\/strong>.<\/p>\r\n

Step 3) Locate the drop-down menu under Data Set<\/strong> and select Movie Run Time<\/strong>.<\/p>\r\n\r\n<\/div>\r\n

\r\n

question 2<\/h3>\r\n[ohm_question hide_question_numbers=1]241064[\/ohm_question]\r\n\r\n[reveal-answer q=\"442878\"]Hint[\/reveal-answer]\r\n[hidden-answer a=\"442878\"]Make sure the Several Groups tab is selected and refer to the Descriptive Statistics. Recall that variance is the square of standard deviation.[\/hidden-answer]\r\n\r\n<\/div>\r\n
\r\n

question 3<\/h3>\r\n[ohm_question hide_question_numbers=1]241065[\/ohm_question]\r\n\r\n[reveal-answer q=\"866059\"]Hint[\/reveal-answer]\r\n[hidden-answer a=\"866059\"]Which type of display helps you see the spread of larger data sets more clearly? How much space does the data take up? [\/hidden-answer]\r\n\r\n<\/div>\r\n
\r\n

question 4<\/h3>\r\n[ohm_question hide_question_numbers=1]241066[\/ohm_question]\r\n\r\n[reveal-answer q=\"435162\"]Hint[\/reveal-answer]\r\n[hidden-answer a=\"435162\"]Look at the distributions as histograms and as dotplots. Which is easier for seeing extreme values? Do you see anything of interest when viewing the dotplots?[\/hidden-answer]\r\n\r\n<\/div>\r\nNow that you have more experience with the different measures of variability, you will investigate the effects on variability when there are extreme values, or outliers present.","rendered":"

Variability<\/h3>\n

Let’s use a data set of movie runtimes to explore variability using technology. Follow the directions below to display the descriptive statistics for the database: Movie Run Time, and use the results to answer Questions 2 – 4 below.<\/p>\n

\n

Go to the Describing and Exploring Quantitative Variables tool at https:\/\/dcmathpathways.shinyapps.io\/EDA_quantitative\/<\/a>.<\/p>\n

Step 1) Select the Several Groups<\/strong> tab.<\/p>\n

Step 2) Locate the drop-down menu under Enter Data<\/strong> and select From Textbook<\/strong>.<\/p>\n

Step 3) Locate the drop-down menu under Data Set<\/strong> and select Movie Run Time<\/strong>.<\/p>\n<\/div>\n

\n

question 2<\/h3>\n