Lesson 6: Display Data: Histograms6.DS.5

I can…

I can make and read a histogram to display data in intervals.

Key words

• Histogram — A bar graph that groups data into equal ranges. The bars touch.
• Frequency — How many times a value shows up.
• Interval — A range of numbers used to group data.
• Distribution — How the data is spread out.
• Variability — How spread out the numbers are.

Steps

1. My data: 3, 7, 12, 15, 18, 24. I will use intervals of 10: 0–9, 10–19, 20–29.
2. Interval 0–9: the values 3 and 7 fit, so the frequency is 2.
3. Interval 10–19: the values 12, 15, and 18 fit, so the frequency is 3.
4. Interval 20–29: only the value 24 fits, so the frequency is 1.
5. Now I draw three bars with heights 2, 3, and 1, touching each other. The tallest bar (10–19) is where most values are.

Try it

A histogram of player heights shows: 60–63 in: 2, 64–67 in: 7, 68–71 in: 9, 72–75 in: 4. Which interval has the most players?

Check your answer

68–71 inches

The 68–71 inch interval has the highest frequency of 9 players.

Sentence starter

I know ___ because ___.

Goal: I can explain my histogram using the words histogram, frequency, interval, and distribution.