Identify Trends in Scatter Plots

What is the equation of a line of best fit?

• y = nx + m

• y = mx + b

• y = mx - b

• y = ax^2 + bx + c

Tags

CCSS.8.EE.B.5

What does the slope of the line of best fit represent?

• The color of the line

• The thickness of the line

• The distance between the two variables being analyzed

• The rate of change between the two variables being analyzed.

Tags

CCSS.8.EE.B.5

How is the strength of correlation determined in a scatter plot?

• By the degree of closeness of the plotted points to a straight line

• By the color of the plotted points

• By the size of the plotted points

• By the shape of the plotted points

What does a steep line of best fit indicate?

• Strong positive correlation

• No correlation

• Strong negative correlation

• Weak positive correlation

What does a flat line of best fit indicate?

• A strong positive correlation between the two variables

• A strong negative correlation between the two variables

• A weak positive correlation between the two variables

• No correlation between the two variables

What does a line of best fit with a slight slope indicate?

• Weak negative correlation

• Strong positive correlation

• Weak positive correlation

• No correlation

What is the process of calculating the equation of the line of best fit called?

• Interpolation

• Extrapolation

• Linear regression

• Curve fitting

What is the purpose of interpreting scatter plots?

• To calculate the standard deviation of the data.

• To understand the relationship between variables and identify patterns or trends in the data.

• To determine the mean and median of the data.

• To identify outliers in the data.

What is a scatter plot?

• A scatter plot is a type of plot that displays values for three variables as points on a Cartesian plane.

• A scatter plot is a type of plot or graph that displays values for two variables as points on a Cartesian plane.

• A scatter plot is a type of plot that displays values for two variables as lines on a Cartesian plane.

• A scatter plot is a type of plot that displays values for one variable as points on a Cartesian plane.

What does a correlation coefficient of -1 indicate?

• No relationship between the variables

• Perfect positive linear relationship

• Weak negative linear relationship

• Perfect negative linear relationship