Statistics Vocabulary

To find the _________ you add up all the numbers and then divide by how many numbers you have.

• Mean

• Median

• Mode

• Range

Values that divide a data set into four equal parts.

• Interquartile Range

• Outliers

• First Quartile

• Quartiles

Data collected from a sample.

• Statistical Question

• Sample Statistic

• Population Statistic

• Sample

An entire population of people, animals, plants, or objects from which data can be collected.

• Population

• Sample

• Bias

• Validity

The process of drawing conclusions using valid data from samples and making generalizations about a population.

• Validity

• Random Sample

• Sample

• Inferential Statistic

When a sample is representative of the larger population, selected at random, and is large enough to provide accurate data; well-balanced and neutral.

• Biased Sampling

• Unbiased Sampling

A set of closely grouped data.

• Cluster

• Outlier

• Gap

• Correlation

Which of the following best describes the process of finding the interquartile range for a set of data?

• Add the biggest and smallest numbers.

• Place the numbers in order from least to greatest and find the middle.

• Find the difference between the maximum and the minimum.

• Subtract Q1 from Q3.

What is the term for the median of the lower half of the data?

• Lower Quartile (Q1)

• Upper Quartile (Q3)

• Median (Q2)

• Maximum

What is the term for the median of the upper half of the data?

• Upper Quartile (Q3)

• Lower Quartile (Q1)

• Median

• Minimum