Probability and Statistics

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What is correlation in statistics?

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Correlation is a statistical measure that describes the extent to which two variables change together. It can be positive, negative, or indicate no association.

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CCSS.HSS.ID.C.9

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What does 'no association' mean in correlation?

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'No association' means that there is no predictable relationship between two variables; changes in one variable do not affect the other.

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CCSS.HSS.ID.B.5

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What is the probability of an event?

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Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 (impossible) and 1 (certain).

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CCSS.7.SP.C.5

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How do you calculate the probability of two independent events occurring together?

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To find the probability of two independent events occurring together, multiply the probability of the first event by the probability of the second event.

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CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

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If a spinner has 4 equal sections, what is the probability of landing on any one section?

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The probability of landing on any one section is 1/4, since there are 4 equal sections.

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CCSS.7.SP.C.7A

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What is a trend line in statistics?

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A trend line is a line that is drawn on a graph to show the general direction that a group of points seems to be heading.

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CCSS.8.SP.A.2

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How can temperature affect the number of guests at a theme park?

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Higher temperatures may lead to more guests at a theme park, as people are more likely to visit when the weather is warm.

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CCSS.HSS.ID.B.6A

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What is a positive association in a graph?

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A positive association means that as one variable increases, the other variable also tends to increase.

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CCSS.HSS.ID.B.5

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What is a negative association in a graph?

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A negative association means that as one variable increases, the other variable tends to decrease.

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CCSS.HSS.ID.B.5

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What is a sample in statistics?

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A sample is a subset of a population used to represent the entire group in statistical analysis.

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CCSS.7.SP.A.1

CCSS.HSS.IC.A.1