Athlete 1 has a range of 0.11 seconds and Athlete 2 has a range of 1.51 seconds. Who is more consistent?

Athlete 1

Athlete 2

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Athlete 1 has a range of 0.11 seconds and Athlete 2 has a range of 1.51 seconds. Who is more consistent?

Athlete 1

Athlete 2

In an analysis of call waiting times, 15 out of 30 were 4 minutes or less. What is the chance that a call will be answered in 4 minutes or less.

A

Impossible

B

50/50 chance

C

unlikely

D

certain

Range is the highest - lowest or the maximum- minimum. True or false

A

True

B

False

Which calculation will work out 20% of £1195?

A

0.2 x 1195

B

20/1195

To calculate the mean...

A

Find the total by adding and divide by the number of items.

B

Subtract the lowest from the highest.

Name 5 things that are needed when drawing a bar chart. Make 2 comments on the vertical axis.

Which checking calculation is correct for this sum: 10-2=8?

A

8+2 = 10

B

10-8=2

Which checking calculation is correct for this sum?

1520-1155=365

1520-1155=365

A

365+1155=1520

B

1520-1155=365

The age range in a room was 18. Which is the best explanation of this range?

A

The ages in the room varied a lot.

B

The ages in the room were consistent.

The range of missed appointments in 2015 was 203. Which is the best explanation of the range?

A

The range is the highest take away the lowest.

B

The high range shows there was a high variety in the number of missed appointments.

What is a good checking calculation for this sum?

145x268=38860

145x268=38860

A

268x145=38860

B

38860/268=145

To find 1/4 of an amount....

A

divide by 3

B

divide by 4

To find 1/3 of an amount....

A

divide by 3

B

divide by 4

How can you find 3/4 of an amount?

What is needed for a table?

True or false: range is maximum minus minimum.

A

True

B

False

The ranges of waiting times to use a computer in 3 libraries last week were as follows: Belfast 8 minutes, Bangor 20 minutes and Lisburn 25 minutes. Which library had the most consistent waiting time?

A

Belfast

B

Bangor

C

Lisburn

True or false: a dual bar chart needs a key.

A

True

B

False

What is needed for a dual bar chart?

True or false: The mean is the total divided by the number of items.

A

True

B

False