Exploring Dot Plots and Histograms

What is not a component of a dotplot?

• Y-axis representing frequency

• X-axis with evenly spaced values

• Dots representing data points

• All values included even if not present in data

Which book count had the highest frequency in the dotplot example?

• Five books per month

• Seven books per month

• Nine books per month

• Three books per month

What does the height of each bar in a histogram represent?

• Total data points

• Range of data values

• Frequency of data in that interval

• Number of intervals

In a histogram, if an interval has no data points, what should be done?

• Merge it with another interval

• Omit the interval from the graph

• Include the interval with a bar of height zero

• Increase the height of adjacent bars

How many data points were used in the dotplot example?

• 25 data points

• 20 data points

• 15 data points

• 10 data points

What is the correct way to space points in a dotplot?

• Random spacing based on value

• Even spacing regardless of data frequency

• Spacing based on the square of the data value

• No specific spacing rules

What should be indicated on a histogram's x-axis if the smallest interval does not start at zero?

• Nothing special is needed

• A break in the bars

• A straight line

• A zigzag symbol

How many intervals were used in the histogram example?

• Six intervals

• Five intervals

• Four intervals

• Three intervals

What is the frequency of the 2 to 2.9 interval in the histogram example?

• One

• Two

• Four

• Three

What tool is recommended for drawing the bars in a histogram?

• A ruler

• Freehand

• A compass

• A pencil