Activity Overview
Students understand statistical concepts like center of data and the amount of data variation from the center. They calculate the measures of the center of a distribution and the measures of spread for the data collected as a list. Students also create boxplots for the data. They examine the effects of changing units on summary measures.
Before the Activity
Install the Statistics with List Editor application on the calculator using one of these two methods:
TI Connect™, a TI Connectivity Cable, and the Unit-to-Unit Link Cable
TI-Navigator™ "send to class" feature
See the attached PDF file for detailed instructions for this activity
Print pages 37 - 48 from the attached PDF file for your class
During the Activity
Distribute the pages to the class.
Follow the Activity procedures:
Enter the data of building heights as lists
Find the mean, median, range, interquartile range, and standard deviation
Drop the largest value from the list and calculate the mean, median, range, interquartile range, and standard deviation for the new data
Notice that the median and the interquartile ranges are more robust than the mean, range, and standard deviation
Calculate the standard scores (z scores) and determine the number of standard deviations a value is from the mean
Sort the data in ascending order and calculate the 25th, 50th, 75th, and 90th percentile values
Find the percentile value of a given number
Examine the boxplot for the data
Determine the percent of data in different regions of the plot
Change the units for the data and observe the effects on summary measures
After the Activity
Review student results:
As a class, discuss questions that appeared to be more challenging
Re-teach concepts as necessary