Scatter Lot, Line of Best Fit, Outliers

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%

Based on the scatter plot, which statement best describes the trend?

• As the daily temperature increases, the number of beach visitors increases.

• as the daily temperature decreases, the number of beach visitors increases.

• As the daily temperature increases, there is no change in the number of beach visitors

• As the daily temperature increases, the number of beach visitors decreases

TRUE OR FALSE: A line of best fit must go through the origin.

• True

• False

Tags

CCSS.8.EE.B.5

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

• 2

• 1/2

• -2

• -1/2

Tags

CCSS.8.EE.B.5

What is the correlation?

• Negative correlation

• No correlation

• Positive correlation

• All of the above

The scatter plot has a outlier.

• True

• False

Using the trendline on the graph, if you are 24 years old, how many emails per day would you expect to send?

• about 25

• about 35

• about 12

• about 72

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters

• 15 chapters

• 18 chapters

• 21 chapters

Use the equation of the trend line y = 8.77x + 686 to predict what the hiker's elevation will be after 145 minutes. Round to the nearest whole number of feet.

(a)  

Is there anything wrong with the line of best fit?

• The line of best fit it perfect!

• There are too many data points BELOW the line.

• There are too many data points ABOVE the line.

• The line of best fit should be longer.