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Chapter 17: Activities 305
Comparing Test Results Using Box Plots
Problem
An experiment found a significant difference between boys and girls pertaining to their ability to
identify objects held in their left hands, which are controlled by the right side of their brains, versus their
right hands, which are controlled by the left side of their brains. The TI Graphics team conducted a similar
test for adult men and women.
The test involved 30 small objects, which participants were not allowed to see. First, they held 15 of the
objects one by one in their left hands and guessed what they were. Then they held the other 15 objects
one by one in their right hands and guessed what they were. Use box plots to compare visually the
correct-guess data from this table.
Each row in the table represents the results observed for one subject. Note that 10 women and 12 men
were tested.
Procedure
1. Press 5 to select 5:SetUpEditor. Enter list names WLEFT, WRGHT, MLEFT, and MRGHT,
separated by commas. Press Í. The stat list editor now contains only these four lists. (See
Chapter 11: Lists for detailed instructions for using the SetUpEditor.)
2. Press 1 to select 1:Edit.
3. Enter into
WLEFT the number of correct guesses each woman made using her left hand (Women
Left
). Press ~ to move to WRGHT and enter the number of correct guesses each woman made using
her right hand (
Women Right).
Correct Guesses
Women
Left
Women
Right
Men
Left
Men
Right
84712
9186
12 8 7 12
11 12 5 12
10 11 7 7
811811
12 13 11 12
7124 8
9111012
11 12 14 11
13 9
59
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