Lesson 2.22.2 Small Group · Group 1
Group 1 · Set BSecond form · new problems, same idea
Learning target With my small group, I can make and read a histogram to display data in intervals — one step at a time, with support.
Remember2.2 Small Group · Group 1
To make a histogram, count how many values fall in each equal interval. Then draw touching bars with those heights. A histogram groups data into equal intervals. Each bar shows how many values are in one interval.
Words: Histogram (Histograma)Frequency (Frecuencia)Interval (Intervalo)Distribution (Distribución)Variability (Variabilidad)
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1Complete each step, then write the final answer.
Seven students read for 4, 6, 13, 18, 21, 25 and 27 minutes. Use intervals of 0–9, 10–19 and 20–29. What is the frequency for 20–29?
Show your workHint Count the values from 20 to 29.
Final answer: -
2Complete each step, then write the final answer.
Data: 6, 7, 11, 18, 24, 25, 29. Use intervals of 0–9, 10–19 and 20–29. What is the frequency of 20–29?
Show your workHint Count the values from 20 to 29.
Final answer: -
3Complete each step, then write the final answer.
A histogram shows the ages of people at a pool. 0–19 has 12 people, 20–39 has 9 people and 40–59 has 4 people. How many people are at the pool?
Show your workHint Each bar counts people. Add all the bar heights.
Final answer: -
4Complete each step, then write the final answer.
Data: 3, 6, 8, 9, 12, 14, 15, 21. Use intervals of 5: 0–4, 5–9, 10–14, 15–19 and 20–24. How tall is the tallest bar?
Show your workHint Count each of the five intervals. Then find the greatest count.
Final answer:
Explain your thinkingWhat does the height of a bar in a histogram tell you? Use the jump rope histogram to explain.
Sentence starter The height of the ___ bar is ___. · This means ___ students made ___ jumps.