Computing and Data Analysis Unit 6

Today’s Lesson Objectives: Difference between Quantitative and Categorical Survey class on last nights amount of sleep Watch video on how to make histogram

Different Data Types Categorical Quantatative Set values. For example: Grades: 9th 10th 11th 12 Another example: Blood Type A B AB O Numerical data (continuous) Measured Can take any value within range Examples: Height weight

Video: how to make a histogram using Excel https://www.youtube.com/watch?v=mqF8isv6qAA Histogram is quantitative not categorical Histogram is similar to the bar plot, but notice that there is no space between columns Histograms are similar to bar plot, but counts are within a pre-constructed range of numbers Let’s look at Mobilize_ExerciseHealth_2011.csv First make column graph with Hours Slept with column graph. What happens? Then do pivot table and then do column graph

Survey Hours Sleep Go to piazza access link. Or type or click below https://docs.google.com/spreadsheets/d/1c62uds- 3Qm4sAedzvqFWwL_EkUlsxZ0RF4Jm4qdfTo0/edit?us p=sharing

Mean, Median, Mode Mean = average Median is the middle number when ordered in ascending order Mode is item/element repeated the most

Let’s visit height again in Excel Calculate average (how is this done?) Calculate median (how is this done?) Calculate mode (how is this done?)

5 Survey Data Charts Complete 5 Survey Data Charts. Do you have them?