CSEC MATH MULTIPLE CHOICE #1

The range of a sample gives an indication of the

• way in which the values cluster about a particular point

• number of observations bearing the same value

• maximum variation in the sample

• degree to which the mean value differs from its expected value.

The observation which occurs most frequently in a sample is the

• median

• mean deviation

• standard deviation

• mode

What is the median of the sample 5, 5, 11, 9, 8, 5, 8 ?

• 5

• 6

• 8

• 9

The following scores were obtained by eleven footballers in a goal-shoot competition: 5 3 6 8 7 8 3 11 6 3 2 .

The modal score was

• 3

• 6

• 8

• 11

The following scores were obtained by eleven footballers in a goal-shoot competition: 5 3 6 8 7 8 3 11 6 3 2.

The median score was

• 3

• 6

• 8

• 11

How many packets were weighed?

• 9

• 14

• 65

• 92

What is the frequency of the median weight?

• 7

• 8

• 12

• 14

What is the modal weight?

• 9.9 kg

• 10.1 kg

• 10.2 kg

• 10.5 kg

The mean of ten numbers is 58. If one of the numbers is 40, what is the mean of the other nine?

• 18

• 60

• 162

• 540

The mean of 11 numbers is 7. One of the numbers, 13, is deleted. What is the mean of the remaining 10 numbers?

• 7.7

• 6.4

• 6.0

• 5.8