Chapter 2 Introduction to Statistics

How do you find the mode?

• order least to greatest, then slash from each side until you reach the middle

• add the numbers in your data set, then divide by the amount you added

• look for the number that repeats the most

• highest number minus the lowest number

What is the median?

• 62

• 58

• 66

• 60

What is the range of the set of data?

• 70

• 65

• 80

• 55

What is the mean of test scores?
{70, 70, 80, 85, 85, 90, 95, 95, 100, 100}

• 87

• 85, 95, and 100

• 30

• 85 and 90

A bar graph used to display data grouped into intervals.

• bar graph

• line graph

• stem and leaf plot

• histogram

The difference between the greatest and least values in the data set.

• range

• interquartile range

• standard deviation

• mean absolute deviation

What was the highest score on the math test?

• 53

• 79

• 97

• 90

The sum of all the values in a data set divided by the number of data values. Also called the average.

• mean

• median

• mode

• range

A car salesman records information about the cars he is selling. The number of doors is _____ data

• Nominal

• Continuous

• Discrete

• Ordinal

A car salesman records information about the cars he is selling. The colour of each car is _____ data

• Nominal

• Continuous

• Discrete

• Ordinal