Representing Data Graphically

How do you construct data representation?

• Bar Chart

• Pie Chart

• Line Graph

• Dot plot

• Stem Dot Plot

When representing data using a bar chart :

• the width of each bar must be uniform

• there is no gap between the bars

• the bars need to be evenly spaced

A line graph is suitable to shows the portion of each category of the whole data.

• True

• False

What do the numbers on the x-axis represent?

• Number of Visits

• Age in years

• Relationship between age and doctor visits

• People visiting the doctor.

Which graph is best to show change over time?

• Bar graph 

• picture graph

• line graph 

• pie chart 

A teacher drew a line segment that was 20 inches long on the blackboard. She asked each of her students to estimate the length of the segment and used their estimates to draw this dot plot. How many students were in the class?

• 18

• 16

• 20

• 15

• 19

A teacher drew a line segment that was 20 inches long on the blackboard. She asked each of her students to estimate the length of the segment and used their estimates to draw this dot plot. Were students generally accurate in their estimates of the length of the line? Explain your reasoning.

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Here are descriptions of data sets. Select all descriptions of data sets that could be graphed as dot plots.

• Class size for the classes at an elementary school

• Colors of cars in a parking lot

• Favorite sport of each student in a sixth-grade class

• Birth weights for the babies born during October at a hospital

• Number of goals scored in each of 20 games played by a school soccer team

Priya recorded the number of attempts it took each of 12 of her classmates to successfully throw a ball into a basket. Make a dot plot of Priya’s data.

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What is the number of bars he will include in the graph?

• 4

• 7

• 5

• 9