Probability and Statistics

Front

What is correlation in statistics?

Back

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

Front

What does 'no association' mean in correlation?

Back

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

Front

What is the probability of an event?

Back

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

Front

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

Back

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

Front

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

Back

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

Front

What is a trend line in statistics?

Back

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.

Front

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

Back

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

Front

What is a positive association in a graph?

Back

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

Front

What is a negative association in a graph?

Back

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

Front

What is a sample in statistics?

Back

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