Final exam review

Front

What is the theoretical probability of flipping heads on a fair coin?

Back

50%.

Front

What is the experimental probability of flipping heads if a coin is flipped 4 times and results in 3 heads?

Back

75%.

Front

What is an independent variable?

Back

A variable that can be controlled in an experiment.

Front

What is a dependent variable?

Back

A variable that cannot be controlled in an experiment.

Front

In a normal distribution, what does the mean represent?

Back

The average score of the data set.

Front

What is the standard deviation in a normal distribution?

Back

A measure of the amount of variation or dispersion of a set of values.

Front

What percentage of data falls within one standard deviation of the mean in a normal distribution?

Back

Approximately 68%.

Front

What percentage of ACT scores would likely score between 15.5 and 18.4 if the mean is 18.4 and standard deviation is 2.9?

Back

34%.

Front

What does the y-intercept represent in a scatterplot?

Back

The value of the dependent variable when the independent variable is zero.

Front

What does a positive slope in a scatterplot indicate?

Back

As the independent variable increases, the dependent variable also increases.