7th Grade Statistics Review

Front

What is a population in statistics?

Back

A population is the entire group of individuals or items that we want to study or draw conclusions about.

Front

What is a sample in statistics?

Back

A sample is a subset of the population that is selected for analysis.

Front

What is the difference between a sample and a population?

Back

Samples only consider a portion of the population being studied.

Front

How do you find the lower extreme of a data set?

Back

The lower extreme is the smallest value in the data set.

Front

What is the Interquartile Range (IQR)?

Back

The IQR is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set.

Front

How do you calculate the mean of a data set?

Back

Add all the values together and divide by the number of values.

Front

What is the median of a data set?

Back

The median is the middle value when the data set is ordered from least to greatest.

Front

What is a mode in statistics?

Back

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

Front

What does it mean if a data set is skewed?

Back

A skewed data set has a tail on one side, indicating that the data is not symmetrically distributed.

Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, using bars to show frequency.