Grouped Data Class Interval 24 - 26 21-23 18-20 15-17 Σ D f 3 2 4 3 12 Xi 25 22 19 16 xm 20.25 20.25 20.25 20.25 x₁ - xm 4.75 1.75 -1.25 -4.25 (x₁ - xm)²** 22.5625 3.0625 1.5625 18.0625 f(x₁ - xm)²*** 67.6875 6.125 6.25 54.1875 134.25 Get the difference of the midpoint and the mean Square the difference between the midpoint and the mean Multiply the frequency with the square the difference between the midpoint and the mean.
Grouped Data Class Interval 24 - 26 21-23 18-20 15-17 Σ D f 3 2 4 3 12 Xi 25 22 19 16 xm 20.25 20.25 20.25 20.25 x₁ - xm 4.75 1.75 -1.25 -4.25 (x₁ - xm)²** 22.5625 3.0625 1.5625 18.0625 f(x₁ - xm)²*** 67.6875 6.125 6.25 54.1875 134.25 Get the difference of the midpoint and the mean Square the difference between the midpoint and the mean Multiply the frequency with the square the difference between the midpoint and the mean.
Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter4: Graphing And Inverse Functions
Section: Chapter Questions
Problem 6GP: If your graphing calculator is capable of computing a least-squares sinusoidal regression model, use...
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Transcribed Image Text:Grouped Data
Class
Interval
24 - 26
21 - 23
18 - 20
15-17
Σ
●
●
●
D
f
3
2
4
3
12
Xi
25
22
19
16
xm
20.25
20.25
20.25
20.25
Xi - xm
4.75
1.75
-1.25
-4.25
(x₁ - xm)²**
22.5625
3.0625
1.5625
18.0625
f(x₁ - xm)²***
67.6875
6.125
6.25
54.1875
134.25
Get the difference of the midpoint and the mean
Square the difference between the midpoint and the mean
Multiply the frequency with the square the difference between the midpoint and
the mean.
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