Reading Dot Plots, Scatter Plots, and Bar Graphs

What do scatter plots represent?

• One variable represented by numbers

• Two variables represented by numbers

• Three variables represented by numbers

• Four variables represented by numbers

What is the purpose of a line of best fit in a scatter plot?

• To separate the dots into two groups

• To highlight the highest and lowest points

• To show the general pattern of the dots

• To connect all the dots

How do you identify a positive correlation in a scatter plot?

• The dots are randomly distributed

• The line of best fit goes downwards

• The line of best fit is horizontal

• The line of best fit goes upwards

Which of the following is an example of a negative correlation?

• Number of books read and intelligence

• Days worked and money earned

• Miles driven and gas remaining

• Hours of TV watched and size of the TV

What does 'no correlation' mean in a scatter plot?

• The dots form a straight line

• The dots are randomly distributed

• The line of best fit is horizontal

• The line of best fit is vertical

In a dot plot, what does each dot represent?

• A group of people

• A single person or piece of data

• A range of values

• A category

How can you find the median using a dot plot?

• By counting the total number of dots

• By finding the highest stack of dots

• By crossing out dots from each side until you reach the middle

• By adding all the dots together

What is a bar graph useful for?

• Showing relationships between variables

• Showing survey results

• Showing numerical values

• Showing trends over time

In a bar graph, what is typically represented on the x-axis?

• Number of responses

• Types of categories

• Numerical values

• Time intervals

Why does the order of categories in a bar graph not matter?

• Because they do not follow a numerical pattern

• Because they are always in alphabetical order

• Because they are arranged by importance

• Because they are arranged by size