Joint and conditional relative frequencies in two-way tables

Question 1

Survey of streaming habits: Under 16: watch daily 22, not daily 24 16 and over: watch daily 7, not daily 20 What percentage of the under-16s watch daily? Round to the nearest whole percent.

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Question 2

How students travel to school: Year 9: cycle 27, walk 15 Year 10: cycle 19, walk 18 What proportion of all students are "Year 9 and walks"? Give a decimal to 2 decimal places.

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Question 3

Survey of streaming habits: Under 16: watch daily 24, not daily 38 16 and over: watch daily 6, not daily 19 What percentage of the under-16s watch daily? Round to the nearest whole percent.

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Question 4

How students travel to school: Year 9: cycle 6, walk 7 Year 10: cycle 17, walk 28 What proportion of all students are "Year 9 and cycles"? Give a decimal to 2 decimal places.

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Question 5

Survey of streaming habits: Under 16: watch daily 33, not daily 16 16 and over: watch daily 31, not daily 40 What percentage of the under-16s watch daily? Round to the nearest whole percent.

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Question 6

How students travel to school: Year 9: cycle 34, walk 32 Year 10: cycle 17, walk 9 What proportion of all students are "Year 9 and cycles"? Give a decimal to 2 decimal places.

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Question 7

Survey of streaming habits: Under 16: watch daily 18, not daily 23 16 and over: watch daily 12, not daily 35 What percentage of the 16-and-overs watch daily? Round to the nearest whole percent.

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Question 8

How students travel to school: Year 9: cycle 28, walk 40 Year 10: cycle 8, walk 8 What proportion of all students are "Year 9 and cycles"? Give a decimal to 2 decimal places.

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Question 9

Survey of streaming habits: Under 16: watch daily 22, not daily 36 16 and over: watch daily 16, not daily 15 What percentage of the 16-and-overs watch daily? Round to the nearest whole percent.

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Question 10

How students travel to school: Year 9: cycle 5, walk 40 Year 10: cycle 6, walk 20 What proportion of all students are "Year 9 and cycles"? Give a decimal to 2 decimal places.

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Question 11

Survey of streaming habits: Under 16: watch daily 28, not daily 14 16 and over: watch daily 34, not daily 40 What percentage of the 16-and-overs watch daily? Round to the nearest whole percent.

Answer 

Question 12

How students travel to school: Year 9: cycle 34, walk 38 Year 10: cycle 33, walk 26 What proportion of all students are "Year 9 and walks"? Give a decimal to 2 decimal places.

Answer 

Question 13

Survey of streaming habits: Under 16: watch daily 24, not daily 20 16 and over: watch daily 36, not daily 39 What percentage of the under-16s watch daily? Round to the nearest whole percent.

Answer 

Question 14

How students travel to school: Year 9: cycle 21, walk 21 Year 10: cycle 19, walk 27 What proportion of all students are "Year 10 and walks"? Give a decimal to 2 decimal places.

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Question 15

Survey of streaming habits: Under 16: watch daily 6, not daily 12 16 and over: watch daily 37, not daily 38 What percentage of the 16-and-overs watch daily? Round to the nearest whole percent.

Answer 

Question 16

How students travel to school: Year 9: cycle 32, walk 18 Year 10: cycle 24, walk 20 What proportion of all students are "Year 10 and cycles"? Give a decimal to 2 decimal places.

Answer