Quiz: Intro to Statistics

What do you do if there are two numbers in "the middle" when you are finding the median?

• Pick your favorite number

• They are both the median

• Add the two numbers in the middle and then divide by two.

• None of the above

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What is the median?

• The number in the middle.

• The greatest number - the least number

• The average

• The number that appears most often.

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To find the average of a set of values, add up all the values in the data set and divide by...

• 2

• The smallest number

• The largest number

• The number of values included in the set

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Dr. Dred is a dentist. He needs to report on the mean (average) number of cavities that his patients have.

The following represents the cavities for his 7 patients:

1, 0, 1, 5, 0, 3, 4.

What is the average number of cavities?

• 14

• 7

• 2

• 1

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CCSS.6.SP.A.3

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Which number is NOT the mean, median or range of the data set 4, 3, 15, 11, 3, 8, 7, 5?

• 6

• 12

• 11

• 7

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If you score 76, 85, 97, and 82 on your math tests, what would your mean score be?

• 82

• 85

• 90

• 88

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CCSS.6.SP.A.3

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What is the MODE of this data?

• 100

• 80, 85, and 90

• 2

• None

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If the mode score on the Algebra II portfolio was 90, which of these interpretations must be correct?

• More students received a 90 than any other grade.

• 99 was the highest grade.

• A score of 91 was slightly above average.

• No student scored below a 56.

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Determine the mean absolute deviation of the data.

9, 7, 11, 10, 8

• 9

• 1.2

• 6

• 5

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What is the average distance from the mean for the following data set:

{10, 8, 5, 12, 20}

• 4

• 11

• 10

• 3.4

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