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Making Inferences Math

Authored by Anthony Clark

Mathematics

7th Grade

inferences covered

Making Inferences Math
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20 questions

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1.

OPEN ENDED QUESTION

1 min • 1 pt

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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2.

OPEN ENDED QUESTION

1 min • 1 pt

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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3.

OPEN ENDED QUESTION

1 min • 1 pt

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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4.

OPEN ENDED QUESTION

1 min • 1 pt

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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5.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Media Image

A representative sample of 80 customers in a clothing store was surveyed about how they paid for their purchases. The table shows the responses. Based on the results, which of the following are valid inferences. Select two answer choices.

Tomorrow, 8 out of the first 80 customers will for sure pay with a gift card.

In a group of 40 customers, it is expected that about 10 will pay with cash.

About 30% of all the store's customers will pay with a credit card.

A sample of 100 customers would provide less reliable data.

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The manager of a music store surveyed a random sample of customer who shop in the store about their favorite type of music. The table shows the number of customers who selected each type of music. Based on the information in the table, which inference about the favorite type of music of all the customers who shop in the music store appears to be valid?

They are certain to select rock or pop music.

They are less likely to select country or rap music than rock music.

They are more likely to select country music than jazz, classical, or rap music.

They are certain to select any type of music other than jazz music.

7.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Media Image

A representative sample of 80 customers in a clothing store was surveyed about how they paid for their purchases. The table shows the responses. Based on the results, which of the following are valid inferences. Select all that apply.

Tomorrow, 8 out of the first 80 customers will for sure pay with a gift card.

In a group of 40 customers, it is expected that about 10 will pay with cash.

About 0.3, or 30%, of all the store's customers will pay with a credit card.

A sample of 100 customers would provide less reliable data.

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