Notesale: Turn your study into money

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For the given data below, determine:
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a) the mean

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b) the standard deviation

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c) the variance

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d) the coefficient of variation

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e) the 95% confidence interval for the mean

Also (f) construct a histogram using a range from 7
...
5 with
intervals

of

0
...
8, 9
...
8, 9
...
4, 10
...
2, 11
...
4, 10, 10
...
9, 10
...
8,
9
...
5, 8
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8, 10
...
1, 9
...
6, 10
...
9
To determine the statistical measures for the given records set, let's go
through every step:

a) The mean: To find the mean (average), we sum up all the data points
and divide by the total number of data points
...
8 + 9
...
8 + 9
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4 + 10
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2 + 11
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4 + 10 + 10
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9 + 10
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8 + 9
...
5 + 8
...
8 + 10
...
1 + 9
...
6 + 10
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9 = 234
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Therefore, the mean
is: 234
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7792 (rounded to 4 decimal locations)
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It quantifies how a great deal the records deviates from the
suggest
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Square each distinction
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Divide the sum by means of the entire quantity of data factors
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Using the given data set, let's calculate the standard deviation:
Step 1: Subtract the mean from each data point:
(8
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7792), (9
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7792), (9
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7792), (9
...
7792), (10 9
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4 - 9
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1 - 9
...
2 - 9
...
3 - 9
...
4 - 9
...
7792), (10
...
7792), (7
...
7792), (10
...
7792), (9
...
7792), (9
...
7792), (9
...
7792), (8
...
7792),
(8
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7792), (10
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7792), (10
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7792), (9
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7792), (9
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7792), (10
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7792), (8
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7792)

Step 2: Square each difference:
0
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00056896, 0
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00033824, 0
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00031344, 0
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00517696, 1
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00031344,
0
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00031344, 0
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00031344, 0
...
00031344, 0
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01992704, 0
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07527344,
0
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000



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