Measures of central tendency

Which measure divides an ordered set of data, into two equal halves.

• Mean

• Mode

• Range

• Median

Mode refers to the value within a series that occurs ________ number of times.

• Maximum

• Minimum

• Infinite

• Zero

The sum of deviations from the _________ is always zero.

• Median

• Mean

• Mode

• None of the above

Which of the following diagrams is used to find the value of mode graphically?

• Pie chart

• Ogive

• Histogram

• Polygon

Magnitude of scores is included in which of the central tendency measures?

• Mean

• Median

• Mode

• Range

Which one of the following statements best describes the median measure?

• It gives us the middle score in a data set, which will not change if you rearrange the scores in any order that does not change their magnitude.

• It gives us the middle score in a data set, which will change if you rearrange the scores in any order that does not change their magnitude.

• It is always less than or equal to the mean of a data set.

• None of the above

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

• 6.0

• 6.4

• 5.8