Statistic For Ungrouped Data

How do you find the range?

• 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 was the highest score on the math test?

• 53
• 79
• 97
• 90

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

In the set of scores: 14, 17, 10, 22, 19, 24, 8, 12, and 19. The median is

• 17

• 15

• 16

• 13

In a 100 item test, the passing mark is the 3rd quartile. What does it imply?

• The students should answer at least 75 items correctly to pass the test.

• The students should answer at least 50 items correctly to pass the test.

• The students should answer at most 75 items correctly to pass the test.

• The students should answer at most 50 items correctly to pass the test.

Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Roger's scores?

• 193
• 127
• 60
• 66

Find the lower quartile (Q1) of the following set of scores 6, 7, 8, 9, 11, 13, 15

• 13
• 7

• 9
• 6

Find the IQR (Q3 - Q1)  of the data

20, 22, 25, 29, 31

• 30
• 21
• 25
• 9