# Section B: Practice Problems Ways to Represent Data

## Section Summary

## Details

In this section we represented **data** in picture graphs and bar graphs and used them to answer questions.

A **picture graph** is an organized way to share data using pictures of the objects.

A **bar graph** is an organized way to share data using the height or length of rectangles to show how many in each category or group.

We can use these graphs to answer the questions below.

How many students chose a dog?

How many more students chose cats than chose lizards?

How many students voted for their favorite pet?

## Problem 1 (Lesson 7)

Here is how Diego recorded his classmates’ favorite colors:

yellow

red

red

blue

red

blue

purple

yellow

red

red

blue

purple

red

blue

blue

yellow

red

red

Create a representation to show Diego’s data.

## Problem 2 (Lesson 8)

The picture graph shows the favorite colors of some students.

Select **3** statements that are true about the data recorded in the graph.

More students like green than any of the other colors.

5 students chose blue as their favorite color.

2 more students chose blue than orange.

22 students voted in all.

3 fewer students chose blue than green.

## Problem 3 (Lesson 8)

The picture graph shows the pattern blocks that were used to create a pattern.

Select **3** questions that you can answer with the graph.

Are there more trapezoids than squares?

Are all of the triangles together in the pattern?

How many hexagons are there?

How many more triangles are there than rhombuses?

How many squares and trapezoids are there in the shape altogether?

## Problem 4 (Lesson 9)

Use the bar graph to answer the questions about the trees in the park.

How many trees are there altogether?

How many more maple trees are there than willow trees?

Which kind of tree has the smallest number?

## Problem 5 (Lesson 10)

The table shows the fish in a tank.

name | number |
---|---|

goldfish | |

guppy | |

angle fish | |

molly |

Make a bar graph showing the data from the table.

## Problem 6 (Lesson 11)

The bar graph shows the favorite seasons of some students.

Write two questions that you can answer using the graph.

Answer your questions.

## Problem 7 (Exploration)

The data display about some shapes in a bag is not finished. It shows the kinds of shapes, but not how many of each are in the bag.

triangles | squares | circles |
---|---|---|

Create a set of data about how many shapes are in the bag that makes all of these statements true:

There are more than 15 shapes altogether, but less than 25 shapes.

There are 6 more squares than circles.

There are 7 fewer circles than triangles.

## Problem 8 (Exploration)

Gather data at school or at home and make a graph showing the data.

Ask a math question that can be answered with the data.

Trade with a partner and answer each other’s questions.

## Problem 9 (Exploration)

Han made this bar graph showing the number of songs Elena and Noah listened to on Saturday.

How could Han improve the diagram?

If Noah listened to 7 songs, how many songs do you think Elena listened to? Explain your reasoning.