Mean challenge activity

What is the definition of the mean?

• The average
• The middle number
• The difference between the highest and lowest numbers
• The number that occurs the most

The height of three basketball players is 210 cm, 220 cm and 191 cm.
What is their average height?

• 210
• 207
• 220
• 200

Find the mean of these numbers:
2, 57, 38, 42, 6

• 29
• 38
• 50
• 145

Find the mean of the numbers below:

4, 9, 7, 10, 5

• 5

• 6

• 7

• 8

Find the mean of the numbers below:

3, 2, 1, 3, 2, 1, 3, 2, 1, 3, 2, 1

• 3

• 2

• 1

• 4

Find the mean of the numbers below:

1, 8, 7, 5, 6, 4, 7, 6

• 5

• 5.5

• 6

• 6.5

Jeff has four grades from tests and IXL. They are all weighted equally. If Jeff's grades are 100, 96, 96, and 100, what Jeff's current average grade?

• 96

• 97

• 98

• 100

The mean of six numbers is 5.

Five of the numbers are 6, 6, 5, 3 and 1.

Work out the sixth number.

• 4

• 9

• 4.2

• 7

Five houses on a street are sold in one year. They sell for:

£175,000 £184,000 £150,000 £201,000 £191,000

Calculate the mean price.

• £180,200

• £175,000

• £185,700

• £182,400

What is the mean of the data? Round to the nearest tenth.

• 4.5

• 5

• 5.2

• 5.7