Continuous and Discrete Random Variables

Standard Deviation

Median

Mode

Mean

As one variable increases, the other decreases.

The variables are unrelated.

There is no relationship between the variables.

As one variable increases, the other also increases.

Quantifying the correlation between two variables

Measuring the central tendency of a dataset

Calculating the standard deviation

Determining the mode of a dataset

Regression line

Frequency line

Deviation line

Correlation line

Regression

Correlation

Interpolation

Extrapolation

It can take any value within a range.

It has distinct, separate values.

It is always continuous.

It is not used in statistics.

They have distinct, separate values.

They can take any value within a range.

They are always discrete.

They are not used in predictions.

They are easier to calculate.

They eliminate the need for data analysis.

They allow for better predictions.

They simplify the data.

Number of students in a class

Temperature measured in degrees

Number of books on a shelf

Number of cars in a parking lot

It is only used for temperature data.

It eliminates the need for data collection.

It simplifies the data.

It provides a continuous representation for predictions.