Algebra Statistics

Find the Upper Quartile (Q3) of the following numbers:

• 72

• 88

• 94

• 22

Find the IQR of the following numbers:

84, 88, 72, 74, 98, 16, 94

• 22

• 12

• 82

• 72

What is the Q1 (25th Percentile) for this dot plot?

• 75

• 80

• 85

• 95

• 15.17

• 3.85

• 4.22

• 5

Find the median.

12, 5, 9, 18, 24, 27, 5, 1, 25, 14

• 12

• 14

• 13

• 18

Find the median of these numbers:

4, 2, 7, 4, 3, 8, 1, 7, 2, 5

• 4.3

• 5

• 7

• 4

The data sets show the test scores of a group for the last two tests.

Test 1: {75, 75, 85, 80, 65, 70, 65} Test 2: {95, 85, 85, 90, 90, 95, 100}

Which data set had the smaller standard deviation?

• Test 1 with a standard deviation of 7.5

• Test 2 with a standard deviation of 5.6

• Test 1 with a standard deviation of 6.9

• Test 2 with a standard deviation of 5.2

Consider the dot plots which show the distribution of data collected on two high school basketball players. Which statement BEST describes the center of the data collected for the two players?

• 
  median score for player 1 is greater

• 
  median score for player 2 is greater

• median score for player 1 is two points less

• median scores are the same for both players

• 
  median score for player 2 is two points less

What is the MODE of this data?

• 100

• 20

• 80, 85, and 90

• none

The mode score on the 6th grade math test was 94! Which of these interpretations must be correct?

• 99 was the highest score on the test.

• More students received a 94 than any other score

• No student scored below a 50

• A score of 91 was slightly below average.