Sum Of Products And Mean - Casio fx-7400G PLUS Booklet

AC-2 Sum of Products and Mean
x
11.4
11.9
12.4
5Total
6Mean
Calculator Operation
1 Use the LIST function.
2 Input the values for x (11.4, 11.9, 12.4) into List 1.
3 Input the values for y (9, 32, 53) into List 2.
4 Move the cursor to the top of List 3.
5 Perform the following key operation to calculate the values of xy.
K1
(LIST)
6 To calculate the value of "Total," move the cursor to line 4 of List 2 and then perform the
following key operation.
K1
(LIST)
7 To calculate the value of "Sum," move the cursor to line 4 of List 3 and then perform the
following key operation.
K1
(LIST)
8 To calculate the value of "Mean," move the cursor to line 5 of List 3, and then divide the
result (Sum) obtained in step 7 by the result (Total) obtained in step 6.
Perform the following key operation.
/
1140.6 94
Another way of performing the step 8 is to move the cursor to the title of List 4 and
perform the key operation below.
K1
(LIST)
y xy
1
9
2
32
3
53
4Sum
1 *1
1
(List)
[[2
(Sum)
[[2
(Sum)
=
12.134
1 /1
3
(List)
Answers
1102.6 2380.8 3657.2 41140.6
594 612.1
wQ
2
(List)
[1 w
2
(List)
[1
w
3
(List)
wQ
2
(List)
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