Graphical Representations of Data

Graphical Representations of Data

Dot Plots

• Show numerical data

• Work best with small to medium sized data sets

Bar Graphs

• Show categorical data

• Categories listed on horizontal axis

• Frequency shown on vertical axis

Histograms

• Show numerical data

• Work best with large data sets

• Shows data in ranges (also known as "bins")

• "Bins" are shown along horizontal axis

• Frequency shown on vertical axis

Multiple Choice

Suppose the class was polled about their favorite kind of flower.

Which type of graph would you use to show this data?

• Dot Plot

• Bar Graph

• Histogram

Multiple Choice

If our class were to take a poll on how far (in miles) their house is from the school, which type of graph would you use to show that data?

• Dot Plots

• Bar Graphs

• Histograms

Multiple Choice

How many people in the survey were 40 years old or older?

• 23

• 18

• 52

• 60

Open Ended

How is a histogram different than a bar graph?

Fill in the Blank

A dot plot shows _______ data.

Fill in the Blank

A bar graph shows __________ data.

Fill in the Blank

A histogram shows __________ data.