Exploring Measures of Central Tendency: Mean, Median, and Mode

What term describes numbers like mean, median, and mode that summarize data sets?

• Measures of central tendency

• Clusters

• Graphical representations

• Data summaries

How is the mean calculated from a set of numbers?

• Find the middle value

• Subtract smallest from largest

• Most frequent number

• Sum all numbers and divide by count

What must be done to a data set before finding the median?

• Convert all numbers to positive

• Arrange numbers in descending order

• Arrange numbers in ascending order

• Remove any outliers

In a data set, if there are two middle numbers, how is the median determined?

• Choose the larger number

• Average the two numbers

• Choose the smaller number

• Recollect more data

What does the mode represent in a data set?

• The average of all numbers

• The middle value

• The difference between highest and lowest values

• The most frequently occurring number

When is it preferable to use the median instead of the mean?

• When data points are few

• When data points are evenly distributed

• When there are extreme values in the data set

• When all data points are identical

Which measure of central tendency is typically used when data points are close to each other?

• Range

• Mode

• Median

• Mean

What is the mean of the data set 4, 6, 12, 5, 8?

• 8

• 5

• 7

• 6

Which number is the median of the data set 2, 3, 5, 5, 6, 8, 18?

• 6

• 5

• 8

• 3

What is the mode of the data set 11, 12, 12, 14, 16, 11, 15?

• No mode

• 12

• 11 and 12

• 11