Use Data from a Random Sample to Draw Inferences About a Population: CCSS.Math.Content.7.SP.A.2 - Common Core: 7th Grade Math

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Question

School elections are at the end of next week, and there are three students running for class president: Sara, Matt, and Joseph. The school principal decided to take a random sample of students and find out which candidate each student planned to vote into the role of class president. Out of the students that attend the school, she asked students how they planned to vote. The results are shown in the provided table.

What inference can be made based on the results shown in the provided table?

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Answer

We can use data from a random sample to make inferences about a population. In this case, our population is the entire student body, and the random sample is the students that were randomly selected by the principal and asked how they planned to vote.

Based on our answer choices, we are making an inference about who will likely win the class election. Sara received the most votes out of the principal's pole; thus, we can infer—based on these results—that Sara will be the future student body class president.

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Question

School elections are at the end of next week, and there are three students running for class president: Sara, Matt, and Joseph. The school principal decided to take a random sample of students and find out which candidate each student planned to vote into the role of class president. Out of the students that attend the school, she asked students how they planned to vote. The results are shown in the provided table.

What inference can be made based on the results shown in the provided table?

Screen shot 2016 03 01 at 8.26.43 am

Answer

We can use data from a random sample to make inferences about a population. In this case, our population is the entire student body, and the random sample is the students that were randomly selected by the principal and asked how they planned to vote.

Based on our answer choices, we are making an inference about who will likely place third in the class election. Joseph received the least votes out of the principal's pole; thus, we can infer—based on these results—that Joseph will place third.

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Question

School elections are at the end of next week, and there are three students running for class president: Sara, Matt, and Joseph. The school principal decided to take a random sample of students and find out which candidate each student planned to vote into the role of class president. Out of the students that attend the school, she asked students how they planned to vote. The results are shown in the provided table.

What inference can be made based on the results shown in the provided table?

Screen shot 2016 03 01 at 8.26.43 am

Answer

We can use data from a random sample to make inferences about a population. In this case, our population is the entire student body, and the random sample is the students that were randomly selected by the principal and asked how they planned to vote.

Based on our answer choices, we are making an inference about which two candidates will likely win the class election. Sara received the most votes out of the principal's pole, followed by Matt; thus, we can infer—based on these results—that Sara and Matt have the best chance to be the future student body class president.

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Question

The owner of a zoo wants to find out which animal exhibit is the most popular. The owner decided to take a random sample of the zoo's visitors to find out which exhibit was the visitor's favorite. Out of the visitors of the zoo last Friday, the owner asked visitors which exhibit was their favorite. The results are shown in the provided table.

What inference can be made based on the results shown in the provided table?

Screen shot 2016 03 01 at 9.42.51 am

Answer

We can use data from a random sample to make inferences about a population. In this case, our population is all of the visitors of the zoo on Friday, and the random sample is the visitors that were randomly selected by the owner and asked which exhibit was their favorite.

Based on our answer choices, we are making an inference about which animal exhibit is the most popular. The pandas received the most votes out of the owner's pole; thus, we can infer—based on these results—that the Panda Exhibit is the most popular exhibit at the zoo.

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Question

The owner of a zoo wants to find out which animal exhibit is the most popular. The owner decided to take a random sample of the zoo's visitors to find out which exhibit was the visitor's favorite. Out of the visitors of the zoo last Friday, the owner asked visitors which exhibit was their favorite. The results are shown in the provided table.

What inference can be made based on the results shown in the provided table?

Screen shot 2016 03 01 at 9.42.51 am

Answer

We can use data from a random sample to make inferences about a population. In this case, our population is all of the visitors of the zoo on Friday, and the random sample is the visitors that were randomly selected by the owner and asked which exhibit was their favorite.

Based on our answer choices, we are making an inference about which animal exhibit is the least popular. The fish received the least votes out of the owner's pole; thus, we can infer—based on these results—that the Fish Exhibit is the lest popular exhibit at the zoo.

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Question

The owner of a zoo wants to find out which animal exhibit is the most popular. The owner decided to take a random sample of the zoo's visitors to find out which exhibit was the visitor's favorite. Out of the visitors of the zoo last Friday, the owner asked visitors which exhibit was their favorite. The results are shown in the provided table.

What inference can be made based on the results shown in the provided table?

Screen shot 2016 03 01 at 9.42.51 am

Answer

We can use data from a random sample to make inferences about a population. In this case, our population is all of the visitors of the zoo on Friday, and the random sample is the visitors that were randomly selected by the owner and asked which exhibit was their favorite.

Based on our answer choices, we are making an inference about which two animal exhibits are the most popular. The pandas received the most votes out of the owner's pole, followed by the gorillas; thus, we can infer—based on these results—that the Panda Exhibit and the Gorilla Exhibit are the two most popular exhibits at the zoo.

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Question

The owner of a zoo wants to find out which animal exhibit is the most popular. The owner decided to take a random sample of the zoo's visitors to find out which exhibit was the visitor's favorite. Out of the visitors of the zoo last Friday, the owner asked visitors which exhibit was their favorite. The results are shown in the provided table.

What inference can be made based on the results shown in the provided table?

Screen shot 2016 03 01 at 9.42.51 am

Answer

We can use data from a random sample to make inferences about a population. In this case, our population is all of the visitors of the zoo on Friday, and the random sample is the visitors that were randomly selected by the owner and asked which exhibit was their favorite.

Based on our answer choices, we are making an inference about which two animal exhibits are the least popular. The fish received the least votes out of the owner's pole, followed by the snakes; thus, we can infer—based on these results—that the Fish Exhibit and the Snake Exhibit are the two least popular exhibits at the zoo.

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Question

The owner of a zoo wants to find out which animal exhibit is the most popular. The owner decided to take a random sample of the zoo's visitors to find out which exhibit was the visitor's favorite. Out of the visitors of the zoo last Friday, the owner asked visitors which exhibit was their favorite. The results are shown in the provided table.

What inference can be made based on the results shown in the provided table?

Screen shot 2016 03 01 at 9.42.51 am

Answer

We can use data from a random sample to make inferences about a population. In this case, our population is all of the visitors of the zoo on Friday, and the random sample is the visitors that were randomly selected by the owner and asked which exhibit was their favorite.

Based on our answer choices, we are making an inference about which animal exhibit the zoo could get rid of with the least amount of upset visitors. The fish received the least votes out of the owner's pole; thus, we can infer—based on these results—that the least amount of people will be upset if the zoo got ride of the Fish Exhibit.

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Question

The owner of a zoo wants to find out which animal exhibit is the most popular. The owner decided to take a random sample of the zoo's visitors to find out which exhibit was the visitors' favorite. Out of the visitors of the zoo last Friday, the owner asked visitors which exhibit was their favorite. The results are shown in the provided table.

What inference can be made based on the results shown in the provided table?

Screen shot 2016 03 01 at 9.42.51 am

Answer

We can use data from a random sample to make inferences about a population. In this case, our population is all of the visitors of the zoo on Friday, and the random sample is the visitors that were randomly selected by the owner and asked which exhibit was their favorite.

Based on our answer choices, we are making an inference about which animal exhibit, if the zoo got rid of, would create the most upset visitors. The pandas received the most votes out of the owner's pole; thus, we can infer—based on these results—that if the zoo got rid of the Panda Exhibit, they'd have the most upset visitors.

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Question

A ballroom dance school wants to find out which dance their clients had the most fun learning. Out of the students that attend the dance school, the manager asked students which style of dance they had the most fun learning. The results are shown in the provided table.

What inference can be made based on the results shown in the provided table?

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Answer

We can use data from a random sample to make inferences about a population. In this case, our population is all of the clients that go to the dance school, and the random sample is the students that were randomly selected by the manager.

Based on our answer choices, we are making an inference about which style of dance was the least fun to learn. The least number of students had fun learning the fox trot dance; thus, we can infer—based on these results—that the fox trot is the least fun dance to learn.

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Question

A ballroom dance school wants to find out which dance their clients had the most fun learning. Out of the students that attend the dance school, the manager asked students which style of dance they had the most fun learning. The results are shown in the provided table.

What inference can be made based on the results shown in the provided table?

Screen shot 2016 03 01 at 10.29.40 am

Answer

We can use data from a random sample to make inferences about a population. In this case, our population is all of the clients that go to the dance school, and the random sample is the students that were randomly selected by the manager.

Based on our answer choices, we are making an inference about which two styles of dance were the most fun to learn. More students had the most fun learning the swing dance, followed by the salsa; thus, we can infer—based on these results—that the swing dance and the salsa were the most fun dances to learn.

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