Mean, Mode, and Data Analysis

Front

What is the mean in statistics?

Back

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

Front

What is the mode in statistics?

Back

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

Front

What does it mean for a distribution to be skewed to the right?

Back

A distribution is skewed to the right when the tail on the right side is longer or fatter than the left side, indicating that there are a few high values.

Front

What does it mean for a distribution to be skewed to the left?

Back

A distribution is skewed to the left when the tail on the left side is longer or fatter than the right side, indicating that there are a few low values.

Front

How do you find the median of a data set?

Back

To find the median, arrange the data points in order and identify the middle value. If there is an even number of data points, the median is the average of the two middle values.

Front

What is an outlier in a data set?

Back

An outlier is a data point that is significantly different from the other data points in the set, often lying outside the overall pattern.

Front

What is a dotplot?

Back

A dotplot is a simple graphical display of data using dots to represent the frequency of values in a data set.

Front

How do you calculate the range of a data set?

Back

The range is calculated by subtracting the smallest value from the largest value in the data set.

Front

What is the difference between mean and median?

Back

The mean is the average of all data points, while the median is the middle value when the data points are arranged in order.

Front

What is the purpose of data analysis?

Back

Data analysis involves inspecting, cleaning, and modeling data to discover useful information, inform conclusions, and support decision-making.