Statistics Test

Front

What is mean absolute deviation (MAD)?

Back

Mean absolute deviation (MAD) is a measure of the dispersion of a set of data points. It is calculated by taking the average of the absolute differences between each data point and the mean of the data set.

Front

How do you calculate the interquartile range (IQR)?

Back

The interquartile range (IQR) is calculated by subtracting the first quartile (Q1) from the third quartile (Q3). IQR = Q3 - Q1.

Front

What does a line plot represent in statistics?

Back

A line plot is a visual representation of data where each data point is shown as an 'X' above a number line, allowing for easy comparison of frequencies.

Front

What is a population in a survey?

Back

A population in a survey refers to the entire group of individuals or instances about whom we hope to learn.

Front

What is a sample in statistics?

Back

A sample is a subset of a population that is used to represent the entire group in statistical analysis.

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. Range = Maximum value - Minimum value.

Front

What is an inference in statistics?

Back

An inference is a conclusion drawn from data analysis, often about a population based on a sample.

Front

What is a survey?

Back

A survey is a method of collecting data by asking people questions to gather information about their opinions, behaviors, or characteristics.

Front

What is the purpose of conducting a poll?

Back

The purpose of conducting a poll is to gauge public opinion on a specific issue or to predict outcomes, such as election results.

Front

What does it mean for data to be skewed?

Back

Data is skewed when it is not symmetrically distributed, meaning one tail is longer or fatter than the other.