7th Grade Statistics

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What is a biased sample?

Back

A biased sample is a group that does not accurately represent the population being studied, leading to skewed results.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is a random sample?

Back

A random sample is a group selected from a population in such a way that every individual has an equal chance of being chosen, ensuring a fair representation.

Tags

CCSS.HSS.IC.B.3

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Why is it important to use random sampling in surveys?

Back

Random sampling helps to eliminate bias, making the results more reliable and applicable to the entire population.

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CCSS.HSS.IC.B.3

Front

What does it mean to predict in statistics?

Back

To predict in statistics means to make an educated guess about a future outcome based on existing data.

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CCSS.HSS.ID.B.6A

Front

If 85% of a group is satisfied, how do you calculate the number of satisfied individuals in a sample of 500?

Back

Multiply 500 by 0.85 (85%) to get 425 satisfied individuals.

Tags

CCSS.7.SP.A.2

Front

What is the difference between a population and a sample?

Back

A population includes all members of a specified group, while a sample is a subset of the population used for analysis.

Tags

CCSS.7.SP.A.1

CCSS.HSS.IC.A.1

Front

What is a survey?

Back

A survey is a method of collecting data by asking people questions to gather information about their opinions, behaviors, or characteristics.

Tags

CCSS.RI.6.7

CCSS.RI.7.7

CCSS.RI.8.7

CCSS.RL.7.7

CCSS.RL.8.7

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What is the purpose of conducting a survey?

Back

The purpose of conducting a survey is to gather information and insights about a specific topic or population.

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CCSS.6.SP.B.5B

Front

What is sampling error?

Back

Sampling error is the difference between the results obtained from a sample and the actual results that would be obtained from the entire population.

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How can bias affect survey results?

Back

Bias can lead to inaccurate conclusions, as it may overrepresent or underrepresent certain groups within the population.

Tags

CCSS.HSS.IC.B.3