Statistical Measures and Summarize Data

The percent bar graph shows the percent of each type of trading card that is in John’s collection.

True of False: One-fourth of the cards were football cards.

• True, because football is 25%

• False, because football is 30%

• True, because football is 40%

• False, because football is 20%

The table shows the results of a survey about favorite types of stores. Determine the relative frequency for each store.

• clothing: 38%

  electronics: 22%

  pet: 10%

  candy: 30%

• clothing: 19%

  electronics: 11%

  pet: 5%

  candy: 15%

• clothing: 50%

  electronics: 25%

  pet: 5%

  candy: 20%

• clothing: 35%

  electronics: 23%

  pet: 15%

  candy: 27%

Hector has a collection of postcards. The frequency table shows the number of postcards he has from each country. The number of postcards from the United States is 3 times the number he has from which country?

• Japan

• Norway

• France

• Canada

What is the mode?

• happening the most

• the average

• biggest - smallest

• the middle #

The scores awarded to 25 students for an assignment were as follows:
4  7  5  9  8  6  7  7  8  5  6  9  8    5  8  7  4  7  3  6  8  9  7  6  9
What is  the mode?

• 6

• 7

• 8

• 9

To find the average of a set of numbers, add up all the items and divide by...

• 2

• The minimum

• The maximum

• The number of items

The number of pages that Carolyn wrote in her journal each day from Monday to Friday is shown below: 
9, 8, 12, 6, 10
What is the mean number of pages she wrote per day?

• 5

• 6

• 9

• 11

In order to find the median, the data must be sorted from least to greatest first.

• True

• False

Find the median.
12, 5, 9, 18, 22, 25, 5

• 9

• 8

• 12

• 18

find the lower quartile of the following set of scores:

12, 9, 4, 6, 5, 8, 9, 4, 10, 2

• 10

• 4

• 9

• 6