Texas Instruments TI-73VSC Teachers Guide - Page 77

72 Using the TI-73: A Guide for Teachers Probability and Statistics 5. Move around the graph and see the data. ) ! and " to view data 6. Have students sketch and label their plot on paper for their report. (If you have TI-73 TI-GRAPH LINKé, students may print their graphs to color and label.) Á A nice connection is to compare the trace values for Xmin, median, and Xmax with their calculated values. 7. Have students poll 50 people (students, teachers, and other adults) to find out which of the brands they would actually buy. Have them record the responses in the table provided on the activity sheet. Students should try to poll those who would actually want to buy the product. They should ask the person why they chose that brand and include their responses with their student analyses. Example poll Product Type: Brand Name 1. Brand A 2. Brand B 3. Brand C 4. Brand D 5. Brand E Price $1.89 $2.25 $1.89 $1.86 $1.98 Tally for each choice lllll lllll lllll ll lllll lllll lllll lllll lllll lll llll 8. In the table on the activity sheet, have students record the name of their product, the frequency, and their poll results as a fraction, decimal, and percent. Example table Á You can use = to enter fractions (numerator = denominator ") and > to convert them to decimals. Brand Name Brand A Brand B Brand C Brand D Brand E Frequency 17 21 5 3 4 Fraction 17/50 21/50 5/50 3/50 4/50 Decimal 0.34 0.42 0.10 0.06 0.08 Percent 34% 42% 10% 6% 8% © 1998 TEXAS INSTRUMENTS INCORPORATED