Statistics

Front

What is the first step when creating a box and whisker plot?

Back

Order the data set.

Front

How is the data distributed in a histogram that is symmetrical?

Back

The data is distributed symmetrically.

Front

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

Back

Above average.

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

What is +2 standard deviations from a mean of 56 with a standard deviation of 4.3?

Back

64.6.

Front

Define 'mean' in statistics.

Back

The mean is the average of a data set, calculated by adding all values and dividing by the number of values.

Front

What is a 'box and whisker plot'?

Back

A graphical representation of data that shows the distribution through their quartiles.

Front

What does a skewed right histogram indicate about the data?

Back

The data has a longer tail on the right side, indicating more lower values.

Front

What is the purpose of standard deviation in statistics?

Back

Standard deviation measures the amount of variation or dispersion in a set of values.

Front

How do you calculate the median of a data set?

Back

Order the data and find the middle value.