Mean, median and mode from a frequency table with classes 2b

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Question 1

A survey was carried out on 200 households having internet connection. As part of the survey each household was asked to estimate on average the amount of time per day spent using the internet. The findings are tabulated as follows:

Class ( Time in minutes)	Frequency (No of households)
10 but less than 20	20
20 but less than 30	71
30 but less than 40	63
40 but less than 50	33
50 but less than 60	13

a)

Calculate the mean of the data to the nearest whole number.

Round your answer to the nearest integer.Expected answer:

Score: 0/2

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b)

Calculate the standard deviation of the data to the nearest whole number.

Round your answer to the nearest integer.Expected answer:

Score: 0/4

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c)

Calculate the median of the data to the nearest whole number.

Round your answer to the nearest integer.Expected answer:

Score: 0/3

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d)

Calculate the mode of the data to the nearest whole number.

Round your answer to the nearest integer.Expected answer:

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Advice

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Numbas has failed

Mean, median and mode from a frequency table with classes 2b

a)

b)

c)

d)

Advice