Decoding Bar Graphs: Scale and Survey Insights

The video tutorial teaches how to read and interpret bar graphs using examples from a third-grade classroom survey on favorite colors and a survey on pets. It explains how to determine the scale of a graph, analyze data, and answer typical questions such as finding differences and totals. The tutorial also highlights the importance of estimating when exact numbers are not clear.

What is the first step in analyzing data from a bar graph?

• Identify the highest bar

• Determine the scale

• Find the average value

• Count the number of bars

Tags

CCSS.2.MD.D.9

If the bar for green reaches up to 8 on the scale, how many students chose green as their favorite color?

• 4 students

• 8 students

• 16 students

• 2 students

Tags

CCSS.2.MD.D.10

Which color was the least popular among the students?

• Blue

• Red

• Green

• Purple

Tags

CCSS.7.EE.B.3

What is the difference in popularity between the most and least popular colors?

• 9 students

• 6 students

• 5 students

• 3 students

Tags

CCSS.8.SP.A.4

How many students liked purple more than red?

• 12 students

• 3 students

• 6 students

• 9 students

Tags

CCSS.6.SP.B.5A

How many students were surveyed about their favorite color?

• 26 students

• 24 students

• 28 students

• 30 students

Tags

CCSS.HSN.Q.A.1

What scale is used in the bar graph about pets?

• Counting by 3s

• Counting by 2s

• Counting by 10s

• Counting by 5s

What is the estimated number of students who prefer cats?

• About 16 students

• About 10 students

• About 20 students

• About 25 students

Tags

CCSS.3.OA.D.8

How many more people have dogs than horses according to the pets bar graph?

• 10 more

• 20 more

• 5 more

• 15 more

Tags

CCSS.3.MD.B.3

What total number of students were surveyed in the pets bar graph?

• 68 students

• 80 students

• 72 students

• 76 students

Tags

CCSS.3.MD.B.3