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3 years ago

95 divided by 4 and 34 divided by 2

Mathematics

2 answers:

MaRussiya [10]3 years ago

5 0

$95/4=\frac{95}{4}=23\frac{3}{4}$ $or$ $23r3$

and

$34/2=\frac{34}{2}=17$

Sladkaya [172]3 years ago

3 0

The first answer is 23.75
the second answer is 17.

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Step-by-step explanation:

For this case we can calculate the sample variance and deviation with the following table

Class Midpoint (Xi) fi Xi*fi Xi^2 *fi

120.6-123.6 122.1 17 2075.7 253443

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___________________________________________

Total 171 22026.1 2839948.85

For this case we can calculate the mean or expected value with the following formula:

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Now we can calculate the sample variance with the following formula:

$s^2 =\frac{\sum f_i X^2_i -[\frac{(\sum X_i f_i)}{n}]^2}{n-1}$

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$s^2 = \frac{2839948.85- \frac{(22026.1)^2}{171}}{171-1}= 16.59$

And the standard deviation would be the square root of the variance and we got:

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