Using the grouped data below, find the standard deviation. Use the formulas and steps given to find the standard deviation of the grouped data.
Using the grouped data below, find the standard deviation. Use the formulas and steps given to find the standard deviation of the grouped data.
Chapter7: Matrices And Determinants
Section7.5: Applications Of Matrices And Determinants
Problem 6ECP: Find the image of the square in Example 6 after a vertical stretch by a factor of k=2.
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Question
Using the grouped data below, find the standard deviation. Use the formulas and steps given to find the standard deviation of the grouped data.
Transcribed Image Text:2:
FORMULA
1: Multiply f by xm for EACH CLASS
E
3
3
3
Sum of
4: Get
3: Square xm then multiply the f
by the
square of
xm
sum
4
5: Sobstitute
Formula 1:
S =
Formula 2:
S-
OF
Stand and Deviation
xm
4
n-1
<f.x²
2
xm²
n ({ f. x²c) - ({f .xc)²
n(n-1)
you Find Porylation, it
must be
ED
FOTO
GRID
Transcribed Image Text:GROUPED DATA...
CLASS
LIMITS
5-7
8-10
11-13
14-16
17-19
CLASS
BOUNDARIES
4.5-7.5
7.5-10.5
10.5-13.5
13.5-16.5
16.5-19.5
TALLY FREQUENCY
=
||
I
||
37
32
31
17
4
CLASS
MARK
6
9
12
15
18
<cf
37
69
100
117
121
>cf
121
84
52
21
4
RELATIVE FREQUENCY
Proportion Percentage
0.0331
3.31%
0.1405
0.2562
0.2645
0.3058
14.05%
25.62%
26.45%
30.58%
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