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Arithmetic Mean and Range

iv The height...

Question

Question 9(iv)
The height of 10 girls were measured in cm and the results are as follows:
135, 150, 139, 128, 151, 132, 146, 149, 143,141
What is the mean height of the girls?

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Solution

The mean height $= \frac{S u m o f h e i g h t s o f t h e g i r l s}{T o t a l n u m b e r o f g i r l s}$
$= \frac{135 + 150 + 139 + 128 + 151 + 132 + 146 + 149 + 143 + 141}{10} = \frac{1414}{10} = 141.4 c m$

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Similar questions

Q. Question 9(i)
The height of 10 girls were measured in cm and the results are as follows:
135, 150, 139, 128, 151, 132, 146, 149, 143,141
What is the height of the tallest girl?

Q. Question 9(iii)
The height of 10 girls were measured in cm and the results are as follows:
135, 150, 139, 128, 151, 132, 146, 149, 143,141
What is the range of data?

The heights of 10 girls were measured in cm and the results are as follows:

135, 150, 139, 128, 151, 132, 146, 149, 143, 141

(i) What is the height of the tallest girl?

(ii) What is the height of the shortest girl?

(iii) What is the range of the data?

(iv) What is the mean height of the girls?

(v) How many girls have heights more than the mean height.

Q. The height of 10 girls were measured in cm and the results are as follows : 135, 150, 139, 128, 151, 132, 146, 149, 143, 141. What is the height of the smallest girls ?

Q. The height of 10 girls were measured in cm and the results are as follows : 135, 150, 139, 128, 151, 132, 146, 149, 143, 141. What is the height of the tallest girl ?

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Arithmetic Mean and Range

Standard VII Mathematics

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