Making Comparative Inferences

Marvin's grades currently in math are 100, 97, 98, 74, and 85. Gavin's grades currently in math are 98, 100, 88, 91, and 65. Which student has the highest mean score?

• Marvin

• Gavin

Marvin's grades currently in math are 100, 97, 98, 74, and 85. Gavin's grades currently in math are 98, 100, 88, 91, and 65. Find the range of each student's scores and make an inference about their ranges.

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Ten fourth-grade girls and ten seventh-grade girls were randomly selected. Their heights, in inches, are recorded below.

4th Grade

56, 47, 54, 51, 53, 58, 48, 54, 46, 53

7th Grade

57, 58, 60, 64, 62, 52, 57, 60, 65, 55

Find the range of both classes heights' and make an inference about them.

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In your own words, describe to me how to find an inference from a set of data.

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Four fourth-grade girls and four seventh-grade girls were randomly selected. Their heights, in inches, are recorded below.

4th Grade

56, 47, 54, 51

7th Grade

57, 58, 60, 64

What is the mean height for 4th grade?

• 52

• 59

• 58

• 62

Four fourth-grade girls and four seventh-grade girls were randomly selected. Their heights, in inches, are recorded below.

4th Grade

56, 47, 54, 51

7th Grade

57, 58, 60, 64

Find the range for both classes and make an inference about the range of scores.

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Four fourth-grade girls and four seventh-grade girls were randomly selected. Their heights, in inches, are recorded below.

4th Grade

56, 47, 54, 51

7th Grade

57, 58, 60, 64

What is the mean for 7th grade?

• 59.75

• 58

• 60

• 52

Four fourth-grade girls and four seventh-grade girls were randomly selected. Their heights, in inches, are recorded below.

4th Grade

56, 47, 54, 51

7th Grade

57, 58, 60, 64

Which grade has the highest mean?

• 4th Grade

• 7th Grade

If Mr. Estes looked at the means (averages) for the last SAFE Quiz for his classes, and the averages were 72%, 71%, and 74%, what inference can you make based on those averages?

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If Mr. Estes looked at the means (averages) for the last SAFE Quiz for his classes, and the averages were 81%, 82%, and 99%, what inference can you make based on those averages?

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