Data Analysis

What type of graph is this?

• Bar Graph

• Line Plot

• Pictograph

• Tally Chart

How many students have blue for a favorite color?

• 11

• 12

• 14

• 17

How many more people have purple for a favorite color than red?

• 3

• 5

• 7

• 9

How many people have two or less books in their desk?

• 4

• 5

• 6

• 7

How can you use a line of best fit to make predictions about data?

• By finding the average of all data points

• By drawing it through the highest and lowest points

• By using it to estimate values for one variable given values of the other

• By counting the number of points that touch the line

Which of the following scenarios is an example of using a scatter plot for making predictions?

• Calculating the exact value of a data point

• Estimating the sales based on advertising spend

• Counting the number of data points above the line of best fit

• Identifying the color of data points

What is the line of best fit in a scatter plot primarily used for?

• To separate different groups of data

• To predict the value of one variable based on the value of another

• To calculate the exact values of all data points

• To create a boundary around all data points

What does a scatter plot with points closely following an upward sloping line indicate about the relationship between the two variables being plotted?

• No correlation

• Negative correlation

• Positive correlation

• Constant correlation

What type of correlation is shown?

• positive linear

• negative non-linear

• negative linear

• positive non-linear

What type of graph is this?

• Bar Graph

• Line Plot

• Pictograph

• Tally Chart