Scale #1 stats

Front

What is an outlier in a data set?

Back

An outlier is a value that is significantly different from the other values in a data set. It can be much higher or lower than the rest of the data.

Front

How do you identify an outlier in a set of numbers?

Back

To identify an outlier, calculate the mean and standard deviation, then determine if any values fall outside the range of mean ± 2 standard deviations.

Front

What is the mode of a data set?

Back

The mode is the number that appears most frequently in a data set.

Front

How do you find the mode in a set of numbers?

Back

Count how many times each number appears; the number with the highest count is the mode.

Front

What is the median of a data set?

Back

The median is the middle value when the numbers are arranged in order.

Front

How do you calculate the median?

Back

1. Organize the numbers from smallest to largest. 2. If there is an odd number of values, the median is the middle number. If even, it is the average of the two middle numbers.

Front

What is the range of a data set?

Back

The range is the difference between the highest and lowest values in a data set.

Front

How do you calculate the range?

Back

Subtract the smallest number from the largest number in the data set.

Front

What is the first step in calculating the median?

Back

Organize the numbers from smallest to largest.

Front

What does it mean if a data set has a low range?

Back

A low range indicates that the values in the data set are close to each other.