These are Abbys science test scores. 97 84 73 88 100 63 97 95 86.

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Presentation transcript:

These are Abbys science test scores

What can you tell us about these numbers?

What is the MEAN? How do we find it? The mean is the numerical average of the data set. The mean is found by adding all the values in the set, then dividing the sum by the number of values.

Lets find Abbys MEAN science test score? ÷ 9 The mean is 87

What is the MEDIAN? How do we find it? The MEDIAN is the number that is in the middle of a set of data 1. Arrange the numbers in the set in order from least to greatest. 2. Then find the number that is in the middle.

The median is 88. Half the numbers are less than the median. Half the numbers are greater than the median.

Median Sounds like MEDIUM Think middle when you hear median.

How do we find the MEDIAN when two numbers are in the middle? 1. Add the two numbers. 2. Then divide by 2.

= ÷ 2 The median is 91.5

What is the MODE? How do we find it? The MODE is the piece of data that occurs most frequently in the data set. A set of data can have: One mode More than one mode No mode

The value 97 appears twice. All other numbers appear just once. 97 is the MODE

A Hint for remembering the MODE… The first two letters give you a hint… MOde Most Often

Which set of data has ONE MODE ? 9, 11, 16, 8, 16 9, 11, 16, 6, 7, 17, 18 18, 7, 10, 7, 18 A C B

Which set of data has NO MODE ? 13, 12, 12, 11, 12 9, 11, 16, 6, 7, 17, 18 18, 7, 10, 7, 18 A C B

Which set of data has MORE THAN ONE MODE ? 9, 11, 16, 8, 16 9, 11, 16, 6, 7, 17, 18 18, 7, 10, 7, 18 A C B

What is the RANGE? How do we find it? The RANGE is the difference between the lowest and highest values.

is the RANGE or spread of this set of data

What is the RANGE of this set of data?

What is the RANGE of this set of data?

What is the RANGE of this set of data?

What is the RANGE of this set of data?

What is the RANGE of this set of data?

What is the RANGE of this set of data?

This one is the requires more work than the others. Right in the MIDDLE. This one is the easiest to find Just LOOK.

Find the….