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Common Core: 7th Grade Math : Statistics & Probability

Study concepts, example questions & explanations for Common Core: 7th Grade Math

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All Common Core: 7th Grade Math Resources

7 Diagnostic Tests 110 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #2 : Develop A Uniform Probability Model By Observing Frequencies In Data Generated From A Chance Process: Ccss.Math.Content.7.Sp.C.7b

Kelly spun a spinner, which is pictured below, times. She recorded her results in the table provided. What is the experimental probability of the spinner landing on the yellow section?

Screen shot 2016 03 03 at 10.09.46 am

Possible Answers:

$\frac{11}{40}$

$\frac{7}{20}$

Correct answer:

$\frac{7}{20}$

Explanation:

The experimental probability is what actually happened in an experiment. In this case, Kelly spun the spinner times, and she landed on yellow $\frac{14}{40}$ times; thus, our experimental probability is $\frac{14}{40}=\frac{7}{20}$

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Example Question #5 : Develop A Uniform Probability Model By Observing Frequencies In Data Generated From A Chance Process: Ccss.Math.Content.7.Sp.C.7b

Kelly spun a spinner, which is pictured below, times. She recorded her results in the table provided. What is the experimental probability of the spinner landing on the green section?

Screen shot 2016 03 03 at 10.09.46 am

Possible Answers:

$\frac{1}{3}$

$\frac{3}{20}$

$\frac{1}{6}$

Correct answer:

$\frac{3}{20}$

Explanation:

The experimental probability is what actually happened in an experiment. In this case, Kelly spun the spinner times, and she landed on green $\frac{6}{40}$ times; thus, our experimental probability is $\frac{6}{40}=\frac{3}{20}$

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Example Question #1 : Finding Experimental Probability

Kelly spun a spinner, which is pictured below, times. She recorded her results in the table provided. Is the experimental probability of landing on yellow more likely, less likely, or equally likely in comparison to the theoretical probability?

Screen shot 2016 03 03 at 10.09.46 am

Possible Answers:

Equally likely

Results can't be found based on the data provided

More likely

Less likely

Correct answer:

Less likely

Explanation:

The theoretical probability is what should happen. In this case, we have spaces and of those spaces is yellow; thus, the theoretical probability of the spinner landing on yellow should always be $\frac{3}{6}$ or $\frac{1}{2}$

In order to compare the theoretical probability and the experimental probability let's convert the fractions into decimals so we can put them on a number line:

$\frac{1}{2}=0.50$

$\frac{7}{20}=0.35$

A probability closer to means that an event is more likely to occur. In this case, 0.50 is closer to ; thus, the experimental probability is less likely than the theoretical probability.

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Example Question #2 : Finding Experimental Probability

Kelly spun a spinner, which is pictured below, times. She recorded her results in the table provided. Is the experimental probability of landing on green more likely, less likely, or equally likely in comparison to the theoretical probability?

Screen shot 2016 03 03 at 10.09.46 am

Possible Answers:

Results can't be found based on the data provided

Less likely

More likely

Equally likely

Correct answer:

Less likely

Explanation:

The theoretical probability is what should happen. In this case, we have spaces and of those spaces is green; thus, the theoretical probability of the spinner landing on green should always be $\frac{1}{6}$

In order to compare the theoretical probability and the experimental probability let's convert the fractions into decimals so we can put them on a number line:

$\frac{1}{6}=0.17$

$\frac{3}{20}=0.15$

A probability closer to means that an event is more likely to occur. In this case, 0.17 is closer to ; thus, the experimental probability is less likely than the theoretical probability.

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All Common Core: 7th Grade Math Resources

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Common Core: 7th Grade Math : Statistics & Probability

Study concepts, example questions & explanations for Common Core: 7th Grade Math

All Common Core: 7th Grade Math Resources

Example Questions

Example Question #2 : Develop A Uniform Probability Model By Observing Frequencies In Data Generated From A Chance Process: Ccss.Math.Content.7.Sp.C.7b

Example Question #5 : Develop A Uniform Probability Model By Observing Frequencies In Data Generated From A Chance Process: Ccss.Math.Content.7.Sp.C.7b

Example Question #1 : Finding Experimental Probability

Example Question #2 : Finding Experimental Probability

All Common Core: 7th Grade Math Resources

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