how to create a bar graph - grade 3

Creating a Bar Graph

1

Read the IdeasThe grade threes are in a play. They need costumes. But each student weighs a different amount. Use the data to create a bar graph to determine how many of each size need to be ordered.

2

What are we Measuring?

1. Weight of Grade Three Students2. Costumes of Grade Three Students3. Students in Grade Three are in a Play

3

TitleWhat we measure becomes the TITLE of our bar graph. Be sure to capitalize the important words in the title.

4

Tally the Data.

59 60 61 62 63 64 65 66 67 68

All these number sit on the x-axis.

John63

Margie68

Peggy59

Caleb68

Michael60

Devon63

Ryan63

Caitlin67

Julie68

Hunter60

Meg63

Brian59

Helen59

Karen62

Marcus62

Jack61

Sophie66

Evan63

5

Tally the Data.

59 60 61 62 63 64 65 66 67 68

What do these numbers measure?That becomes the title of the x-axis!

John63

Margie68

Peggy59

Caleb68

Michael60

Devon63

Ryan63

Caitlin67

Julie68

Hunter60

Meg63

Brian59

Helen59

Karen62

Marcus62

Jack61

Sophie66

Evan63

6

Tally the Data.John63

Margie68

Peggy59

Caleb68

Michael60

Devon63

Ryan63

Caitlin67

Julie68

Hunter60

Meg63

Brian59

Helen59

Karen62

Marcus62

Jack61

Sophie66

Evan63

59 60 61 62 63 64 65 66 67 68

lll ll l l llll l l lll

7

Tally the Data.John63

Margie68

Peggy59

Caleb68

Michael60

Devon63

Ryan63

Caitlin67

Julie68

Hunter60

Meg63

Brian59

Helen59

Karen62

Marcus62

Jack61

Sophie66

Evan63

59 60 61 62 63 64 65 66 67 68

lll ll l l llll l l lll

What does each tally mark represent?That becomes the title of the y-axis.

8

Make your GraphWeight of Students in Grade Three

Weight of Students

Numb

er of

Stud

ents

59 60 61 62 63 64 65 66 67 68

These numbers

came from the tally.They go

beneath the box, not on

the line.

543210

These numbers are the tally

marks. They sit on the line.

Sometimes they will be in intervals

depending on the greatest number of tally marks.

9

Make your GraphWeight of Students in Grade Three

Weight of Students

Numb

er of

Stud

ents

59 60 61 62 63 64 65 66 67 68

543210

10

Find the MinimumWeight of Students in Grade Three

Weight of Students

Numb

er of

Stud

ents

59 60 61 62 63 64 65 66 67 68

543210

11

Find the MaximumWeight of Students in Grade Three

Weight of Students

Numb

er of

Stud

ents

59 60 61 62 63 64 65 66 67 68

543210

12

Find the Range = Weight of Students in Grade Three

Weight of Students

Numb

er of

Stud

ents

59 60 61 62 63 64 65 66 67 68

543210

maximum - minimum

13

Find the Mode Weight of Students in Grade Three

Weight of Students

Numb

er of

Stud

ents

59 60 61 62 63 64 65 66 67 68

543210

14

Find the Median Weight of Students in Grade Three

Weight of Students

Numb

er of

Stud

ents

59 60 61 62 63 64 65 66 67 68

543210

15

Find the Median 59 60 61 62 63 64 65 66 67 68

lll ll l l llll l l lll

Write out each data value in order.

Since there are 3 people

who weigh 59 pounds, write 59

three times.

59 59 59 60 60 61 62 63 63 63 63 63 66 67 68 68 68Cross out one on each end until you find the middle number.59 59 59 60 60 61 62 63 63 63 63 63 66 67 68 68 68

16