Scatter Plots and Types of Association

The graph above shows a line of best fit for data collected on the distance bicyclists have remaining in relation to the amount of time they have been riding.  What is the equation of the line of best fit?

• y = -25x + 170

• y = 25x + 170

• y = -(5/8) x + 170

• y = (5/8) x + 170

• 8

• 14

• 32

• 64

The table shows the attendance at a flag football game for the first 8 games of the season. What is the correlation of the data?

• Weak positive

• Weak negative

• Strong positive

• Strong negative

Which equation for the line of best fit matches this graph?

• Y = 4/3x + 5

• Y = -4/3x + 5

• Y = 3/4x + 5

• Y = -3/4x + 5

Which equation written in slope-intercept form represents the trend line shown on the scatter plot below?

What does the slope mean in the context of the situation graphed?

• You burn 500 calories every 60 minutes of exercise.

• You eat 500 calories when you eat out 60 times.

• You burn 100 calories every 10 minutes of exercise.

• You should not exercise.

a graph with points plotted to show a possible relationship between two sets of data

• Trend line

• scatter plot

• slope

• y intercept

___ data for two variables.

• trivariate

• bivariate

• positive

• negative

x-values and y-values either increase together or decrease together

• linear association

• Positive association

• negative association

• no association

x-values and y-values are going in opposite directions. Therefore, one is decreasing and the other is increasing

• Negative association

• positive association

• no association

• linear association