Using Measures of Center to Draw Inferences

Using Measures of Center to Draw Inferences

Review the Measures of Center

Mean, Median, Mode, ...( Range and Outlier)

Check out this video!!

https://youtu.be/B1HEzNTGeZ4

Multiple Choice

Which measures are affected by the outlier? (you need to find the mean, median, and mode without the outlier to answer this)

• mean

• mean and median

• mean, median, and mode

• median

Multiple Choice

Jaiden scored 71, 80, and 86 on his first three Radicals tests. What must Jaiden score on the fourth test to have a mean of exactly 80?

• 80

• 83

• 85

• 88

Multiple Choice

Gizeth’s test scores are 86, 70, 72, 100, 96, and 80. Which score must Gizeth earn on her next test to have a mean grade of exactly 85?

• 91

• 88

• 85

• 84

Multiple Choice

Mohammed’s current grades for his Delta Math assignments in Alg 1 class are 85, 90, 95, and 80. What is his average on all of these assignments?

• 80.3

• 83

• 88

• 80.8

Multiple Choice

What is the range?

• the average

• the middle number

• largest number minus smallest number

• the number shown the most

Multiple Choice

What is the mode?

• the number shown the most

• largest number minus smallest number

• the middle number

• average of

Multiple Choice

Find the mean as a balance point

• 4

• 4.5

• 5

• 5.5

Multiple Choice

What is the median?

• The number in the middle

• The difference between the highest and lowest values

• The number that occurs the most

• The average

Multiple Choice

What is the difference between the medians?

• 16

• 12

• 8

• 4

Multiple Choice

Compare the data sets to draw an accurate conclusion.

• DVD players cost less, on average, at Store B

• The range for Store B is greater than the range for store A

• Data for store B has a greater mean, but not greater median than Store A.

• DVD players cost less, on average, at Store A.

Multiple Choice

The Table above shows the points scored by the 7th grade basketball team from the previous season. What is the mean, median and mode of the data set?

• Mean: 28

  Median: 26

  Mode: 20

• Mean: 27

  Median: 26

  Mode: 20

• Mean: 25

  Median: 28

  Mode: None

• Mean: 28

  Median: 28

  Mode: 20

Multiple Choice

The dot plots show how long it took students in Mr. Chauncey's two science classes to finish their science homework last night. Find the average to make an inference about the data.

• The 1st period mean is 35. The 2nd period mean is 38.75. On average, it took students in the 1st period class slightly longer to finish their homework than it did the students in the 2nd period class.

• The 1st period mean is 38.75. The 2nd period mean is 35. On average, it took students in the 1st period class slightly longer to finish their homework than it did the students in the 2nd period class.

• The 1st period mean is 35. The 2nd period mean is 38.75. On average, it took students in the 2nd period class slightly longer to finish their homework than it did the students in the 1st period class.

• The 1st period mean is 38.75. The 2nd period mean is 35. On average, it took students in the 2nd period class slightly longer to finish their homework than it did the students in the 1st period class.

Multiple Choice

Find the mean of these numbers:

2, 57, 38, 42, 6

• 29

• 38

• 145

• 55