Scatterplots, Trend Lines, Correlation

Based on the graph, if Joe earned $400, how many hours did he work?

• 25 hours

• 35 hours

• 45 hours

• 15 hours

Which point on the scatter plot represents a hamburger that has 19 grams of fat and 400 Calories? 

• Point A 

• Point B

• Point C

• Point D

The scatter plot shows climate data for 10 cities on a certain day. Use the scatter plot to identify which of these statements is false. 

• The temperature was at least 22 degrees in 4 cities

• Two cities got exactly 10 mm of rain

• None of the cities got more than 20 mm of rain

• None of the statements are false

The scatterplot shows the temp, in degrees, outside a house every hour for 10 hours.

Estimate the temp after 13 hours using the equation.

• 57.5

• 55

• 30

• -10

What type of correlation would you likely see with:

The amount of time spent working compared to the amount of money earned

• positive correlation

• negative correlation

• no correlation

What type of correlation (association)?
The outside temperature and the amount of layers you wear. 

• Positive correlation

• Negative correlation

• No correlation

What is the type of association?

• Negative 

• no association

• positive 

The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which statement represents the best description about the line of best fit?

• The more books students read, the lower their English grade.

• The more books students read, the higher their English grade.

• The fewer books students read, the higher their English grade. 

• No relationship exists between the number of books students read and their English grades. 

• gain 5 hour of sleep for 7 cups of coffee

• lose 5 hours of sleep for 7 cups of coffee

• lose 7 cups of coffee for 5 hours of sleep

• lose 5 cups of coffee for 7 hours of sleep

• gain 7 cups of coffee for every 5 hours of sleep

Which of the following could be the equation of the trend line for this graph?

• There is no trend line because there is no association