Statistics

Front

What percent of data lies within 1 standard deviation from the mean?

Back

68%

Front

What do negative standard deviations on a normal distribution curve indicate?

Back

Below average

Front

How do you determine which class performed better on a test?

Back

Compare the average scores of each class.

Front

If the mean of a data set is 17.8, what happens to the mean if 40 is added?

Back

The mean would go up.

Front

How do you find the median of a data set with two middle numbers?

Back

Add the two middle numbers and divide by 2.

Front

What is the definition of mean in statistics?

Back

The average of a data set, calculated by adding all numbers and dividing by the count.

Front

What is the definition of median in statistics?

Back

The middle value of a data set when arranged in order.

Front

What is the definition of mode in statistics?

Back

The number that appears most frequently in a data set.

Front

What does a normal distribution curve represent?

Back

A probability distribution that is symmetric about the mean.

Front

What is standard deviation?

Back

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