Scatterplots X and Y

Find the slope for the trend line using points (2,2) and (4,3)

• 2

• 1/2

• -2

In the scatter plot, does the image shows a "Line of Best Fit"?

• Yes

• No

Which statement best describes the relationship shown in this scatter plot?

• Students with a bigger shoe size earn a higher math score

• Students with a smaller show size earn a higher math score

• A student's shoe size has no effect on their math score

• A student with a shoe size of 8 will always earn a score of 80%

Estimate the correlation coefficient for this scatterplot.

• r = 1.2

• r = 0.89

• r = 0

• r = -0.89

Estimate the correlation coefficient for this scatterplot.

• r = -0.9

• r = 1

• r = 0.9

• r = -1

Which with is the line of best fit?

• Black

• Orange

• Red

• Blue

What is the type of association?

• Negative 

• no association

• positive 

As x increases, y decreases.

• no correlation

• negative correlation

• correlation coefficient

• positive correlation

Choose ALL graphs that have a non-linear trend.

YOU WILL HAVE MORE THAN ONE ANSWER CHOICE SELECTED.

• 1

• 2

• 3

• 5

In a scatterplot, an outlier...

• ...is something we didn't learn in 8th grade

• ...is a point on the origin

• ...is a point that is far outside the main cluster of points/ordered pairs

• ...is a group of points that are close together