Line of Best Fit Warmup 3

What can you conclude about the relationship between body mass and bite force of a crocodile?

• As bite force decreases, body mass increases.

• As body mass increases, bite force decreases.

• As body mass increases, bite force increases.

• There is no relationship.

Answer explanation

Crocodiles exhibit a positive correlation between body mass and bite force. As body mass increases, their bite force also increases, allowing them to exert more power when capturing prey.

What is the equation of the line of best fit

• y= -2x + 10

• y= 10x+ 2

• y=2x+10

• y= 10

Answer explanation

The equation of the line of best fit is determined by the slope and y-intercept. The correct choice, y = -2x + 10, indicates a negative slope, which fits the data trend better than the other options.

Tags

CCSS.8.EE.B.5

What is the equation of the line of best fit?

• y= 6x + 2

• y = -2x +6

Answer explanation

The equation of the line of best fit is determined by the slope and y-intercept. The correct choice, y = -\frac{1}{2}x + 6, indicates a negative slope, which fits the data trend better than the other options.

Tags

CCSS.8.EE.B.5

About how many male math teachers were there in 2006?

• 15

• 30

• 35

• 45

Answer explanation

In 2006, the data indicates that there were approximately 35 male math teachers, making this the correct choice among the options provided.

Tags

CCSS.HSF.IF.B.4

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

Answer explanation

The trend line indicates that for a book with 180 pages, the predicted number of chapters is approximately 18. This aligns with the data points shown in the scatter plot.

Is this line an accurate line estimate of best fit for the data?

• Yes

• No

Answer explanation

No, the line does not accurately represent the trend of the data points. A best fit line should minimize the distance to all points, and this line fails to do so.

Tags

CCSS.8.EE.B.5