Interpreting Data

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. 

What is a scatter plot?

• A graph that shows the relationship of two data sets.

• A graph drawn using rectangular bars to show how large each value is.

• A graph that shows information that is connected in some way.

• A graph that shows data changing over time.

What represents the x axis?

• ABC Company

• Hours Worked

• Amount Earned in Dollars

• Hours in Car

What is the correlation?

• Negative correlation

• No correlation

• Positive correlation

• All of the above

What type of association does this scatter plot represent?

• positive linear association

• negative association

• no association

• nonlinear association

• 40%
• 48%
• 52%
• 60%

75 is the median of the data set 68, 67, 75, 73, 72.

• True

• False

Spread is the ________, or difference, between least and greatest values.

• Mean

• Median

• Mode

• Range

Which of the following best describes the process of finding the range for a set of data?

• ADD the biggest and smallest numbers

• Place the number in order from least to greatest then find the middle.

• Find the difference between the Maximum and the Minimum.

• Find the average.

Which of the following best describes the process of finding the interquartile range for a set of data?

• ADD the biggest and smallest numbers

• Place the number in order from least to greatest then find the middle.

• Find the difference between the Maximum and the Minimum.

• Subtract Q3 from Q1