Texas Instruments TI-34 User Manual - Page 37
point change and after the point change?
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³ Problem For her last four exams, Ada earned the following scores. Test No. Score 1 2 3 4 73 94 85 78 1. Find Ada's average grade on the four exams. 2. Ada found an error in the two of her test scores. Test 2 was changed to 88 and Test 4 was changed to 84. Find Ada's new average grade of the four exams. 3. What do you notice about Ada's average grades before the point change and after the point change? Clear all v v4 data Data 73 $ 94 $ 85 $ 78 $ %t 1 $ $ < The average grade is 82.5. v $ 88 $$ 84 $ %t 1 $ $ < The new average grade is 82.5. Ada's average did not change. It remained 82.5 after the grade corrections. 37
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37
³
Problem
For her last four exams, Ada earned the following scores.
1.
Find Ada’s average grade on the four exams.
2.
Ada found an error in the two of her test scores. Test 2 was
changed to 88 and Test 4 was changed to 84. Find Ada's
new average grade of the four exams.
3.
What do you notice about Ada's average grades before the
point change and after the point change?
Ada's average did not change. It remained 82.5 after the
grade corrections.
Test No.
1
2
3
4
Score
73
94
85
78
Clear all
data
v v
4
Data
73
$
94
$
85
$
78
$
%t
1
$ $ <
The average grade
is 82.5.
v $
88
$$
84
$
%t
1
$ $ <
The new average grade
is 82.5.