Suki has a dice. She predicts that the dice is not fair. To test her prediction Suki throws the dice 20 times. Here are the results. Score 1 2 3 4 5 6 Frequency 4 3 1 4 5 3 Suki goes on to throw the dice 500 times. Here are the results. Score 1 2 3 4 5 6 Frequency 93 92 83 74 48 110 What can you say about Suki's prediction now?

The frequency of all the numbers are not similar as per the first table. In the first table 5 appears 5 times which is highest and 3 appear only once but in the second table 5 appear 48 times which is least and 3 appear 83 times which is not the least. Therefore, Suki's prediction is not correct.

Suki has a dice. She predicts that the dice is not fair. To test her prediction Suki throws the dice 20 times. Here are the results. Score 1 2 3 4 5 6 Frequency 4 3 1 4 5 3 Suki goes on to throw the dice 500 times. Here are the results. Score 1 2 3 4 5 6 Frequency 93 92 83 74 48 110 Is there any benefit in Suki doing more trials? Give a reason for your answer.

The frequency of all the numbers are not similar as per the first table. In the first table 5 appears 5 times which is highest and 3 appear only once but in the second table 5 appear 48 times which is least and 3 appear 83 times which is not the least. There is no benefit in Suki doing more trials as the dice is fair and every throw of dice is independent to each other.

Lynn Byrd, Greg Byrd and, Chris Pearce Solutions for Chapter: Collecting Data, Exercise 3: Exercise 6.2

Author:Lynn Byrd, Greg Byrd & Chris Pearce

Lynn Byrd Mathematics Solutions for Exercise - Lynn Byrd, Greg Byrd and, Chris Pearce Solutions for Chapter: Collecting Data, Exercise 3: Exercise 6.2

Attempt the practice questions on Chapter 6: Collecting Data, Exercise 3: Exercise 6.2 with hints and solutions to strengthen your understanding. Cambridge Lower Secondary Mathematics Learner's Book 7 Second Edition Digital Access solutions are prepared by Experienced Embibe Experts.

Questions from Lynn Byrd, Greg Byrd and, Chris Pearce Solutions for Chapter: Collecting Data, Exercise 3: Exercise 6.2 with Hints & Solutions

EASY

Lower Secondary Stage 7

IMPORTANT

Cambridge Lower Secondary Mathematics Learner's Book 7 Second Edition Digital Access>Chapter 6 - Collecting Data>Exercise 6.2>Q 4

Dakarai is comparing two books: $A$ and $B$ . He predicts that book $A$ has longer words than book $B$ . Dakaria decides to choose a page from each book as a sample. He will count the length of every word on the page. How can he use the average to see if his prediction is correct?

EASY

Lower Secondary Stage 7

IMPORTANT

Cambridge Lower Secondary Mathematics Learner's Book 7 Second Edition Digital Access>Chapter 6 - Collecting Data>Exercise 6.2>Q 4

Dakarai is comparing two books: $A$ and $B$ . He predicts that book $A$ has longer words than book $B$ . Dakaria decides to choose a page from each book as a sample. He will count the length of every word on the page. Do you think the sample is large enough to be sure that he has the correct answer to his prediction?

EASY

Lower Secondary Stage 7

IMPORTANT

Cambridge Lower Secondary Mathematics Learner's Book 7 Second Edition Digital Access>Chapter 6 - Collecting Data>Exercise 6.2>Q 5

Suki has a dice. She predicts that the dice is not fair. To test her prediction Suki throws the dice $20$ times. Here are the results.

Score	$1$	$2$	$3$	$4$	$5$	$6$
Frequency	$4$	$3$	$1$	$4$	$5$	$3$

What can you say about Suki’s prediction?

EASY

Lower Secondary Stage 7

IMPORTANT

Cambridge Lower Secondary Mathematics Learner's Book 7 Second Edition Digital Access>Chapter 6 - Collecting Data>Exercise 6.2>Q 5

Suki has a dice. She predicts that the dice is not fair. To test her prediction Suki throws the dice $20$ times. Here are the results.

Score	$1$	$2$	$3$	$4$	$5$	$6$
Frequency	$4$	$3$	$1$	$4$	$5$	$3$

What can you say about Suki’s prediction now?

EASY

Lower Secondary Stage 7

IMPORTANT

Cambridge Lower Secondary Mathematics Learner's Book 7 Second Edition Digital Access>Chapter 6 - Collecting Data>Exercise 6.2>Q 5

Suki has a dice. She predicts that the dice is not fair. To test her prediction Suki throws the dice $20$ times. Here are the results.

Score	$1$	$2$	$3$	$4$	$5$	$6$
Frequency	$4$	$3$	$1$	$4$	$5$	$3$

Suki goes on to throw the dice $500$ times. Here are the results.

Score	$1$	$2$	$3$	$4$	$5$	$6$
Frequency	$93$	$92$	$83$	$74$	$48$	$110$

What can you say about Suki's prediction now?

EASY

Lower Secondary Stage 7

IMPORTANT

Cambridge Lower Secondary Mathematics Learner's Book 7 Second Edition Digital Access>Chapter 6 - Collecting Data>Exercise 6.2>Q 5

Suki has a dice. She predicts that the dice is not fair. To test her prediction Suki throws the dice $20$ times. Here are the results.

Score	$1$	$2$	$3$	$4$	$5$	$6$
Frequency	$4$	$3$	$1$	$4$	$5$	$3$

Suki goes on to throw the dice $500$ times. Here are the results.

Score	$1$	$2$	$3$	$4$	$5$	$6$
Frequency	$93$	$92$	$83$	$74$	$48$	$110$

Is there any benefit in Suki doing more trials? Give a reason for your answer.

EASY

Lower Secondary Stage 7

IMPORTANT

Cambridge Lower Secondary Mathematics Learner's Book 7 Second Edition Digital Access>Chapter 6 - Collecting Data>Exercise 6.2>Q 6

Hospital management wants to know what patients think of the emergency service provided by the hospital. The management decides to employ a company to carry out a survey of patients.

Why is a large sample better than a small sample?

MEDIUM

Lower Secondary Stage 7

IMPORTANT

Cambridge Lower Secondary Mathematics Learner's Book 7 Second Edition Digital Access>Chapter 6 - Collecting Data>Exercise 6.2>Q 6

You may choose to work with a partner on this question.

Hospital management wants to know what patients think of the emergency service provided by the hospital. The management decides to employ a company to carry out a survey of patients.

What are the disadvantages of a large sample size?

Lynn Byrd, Greg Byrd and, Chris Pearce Solutions for Chapter: Collecting Data, Exercise 3: Exercise 6.2

Lynn Byrd Mathematics Solutions for Exercise - Lynn Byrd, Greg Byrd and, Chris Pearce Solutions for Chapter: Collecting Data, Exercise 3: Exercise 6.2

Questions from Lynn Byrd, Greg Byrd and, Chris Pearce Solutions for Chapter: Collecting Data, Exercise 3: Exercise 6.2 with Hints & Solutions

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