Bivariate Data Flashcardizz

Front

What is bivariate data?

Back

Bivariate data involves two variables and is used to determine the relationship between them.

Front

What does a line of best fit represent in a scatter plot?

Back

A line of best fit represents the trend in the data, showing the general direction that the data points follow.

Front

What is correlation in statistics?

Back

Correlation measures the strength and direction of a linear relationship between two variables.

Front

What is a positive correlation?

Back

A positive correlation means that as one variable increases, the other variable also tends to increase.

Front

What is a negative correlation?

Back

A negative correlation means that as one variable increases, the other variable tends to decrease.

Front

What is an outlier in a data set?

Back

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

Front

How do you identify an outlier in a scatter plot?

Back

An outlier can be identified as a point that is far away from the cluster of other points in the scatter plot.

Front

What is the purpose of a scatter plot?

Back

A scatter plot is used to visualize the relationship between two quantitative variables.

Front

What does it mean if the line of best fit is close to all points?

Back

It indicates that the model fits the data well, suggesting a strong relationship between the variables.

Front

What is the formula for calculating the slope of a line?

Back

The slope (m) is calculated as m = (y2 - y1) / (x2 - x1) between two points (x1, y1) and (x2, y2).