Bar Graphs Tables, charts and graphs are convenient ways to clearly show your data.
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Bar Graphs Tables, charts and graphs are convenient ways to clearly show your data.
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Transcript of Bar Graphs Tables, charts and graphs are convenient ways to clearly show your data.
Bar Graphs
Tables, charts and graphs are convenient ways to clearly show your data.
Day Chocolate Strawberry White
Monday 53 78 126
Tuesday 72 97 87
Wednesday 112 73 86
Thursday 33 78 143
Friday 76 47 162
The cafeteria wanted to collect data on how much milk was sold in 1 week. The table below shows the results. We are going to take this data and display it in graphs.
Look at the way a bar chart is constructed. Can you name
its different parts?What goes here?
What is this
called?
What do we call this?
What is this?
Horizontal axis (x). Always
labelled.
Vertical axis (y). Always labelled
and numbered.
A bar chart always has a
title.
The height of the bars show how many of something was
scored/recorded.
Can you read the answers?
Flavours
Num
ber
of c
hild
ren
Favourite Crisps
Salt and vinegar
Cheese and
onion
Prawn cocktail
Ready salted
Bacon Worcester sauce
Barbeque
What does this bar chart show?
How many children were
surveyed?
Which is the favourite flavour?
Which is the least liked?
What intervals are used on the
y axis?
What intervals could you use if twice as many children were surveyed?
0
1
234567
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Bar Graph• The purpose of a bar
graph is to display and compare data.
• Bar graphs use bars to show the data.
• A bar graph must include:
- a title - labeled X and Y
axes
- equal intervals are used on the Y axis
- the bars are evenly spaced apart from each other
Scale / Intervals
• Counting by a number is the scale of a graph. Scales can be counting by 2’s, 3’s,4’s, 5’s 10’s …
• Intervals should be equal. Like 100, 200, 300 units.
Bar Graph• A bar graph is used to show
relationships between groups.• The two items being compared
do not need to affect each other.• It's a fast way to show big
differences. Notice how easy it is to read a bar graph. Chocolate Milk Sold
53
72
112
33
76
0
20
40
60
80
100
120
Monday Tuesday Wednesday Thursday Friday
Day
Am
ount
Sol
d
Monday TuesdayWednesday ThursdayFriday
On what day did they sell the most chocolate milk?
Chocolate Milk Sold
53
72
112
33
76
0
20
40
60
80
100
120
Monday Tuesday Wednesday Thursday Friday
Day
Am
ount
Sol
d
Monday TuesdayWednesday ThursdayFriday
Wednesday
Plant Growth
0
5
10
15
20
Week 1 Week 2 Week 3 Week 4
Weeks
Inch
es Light Dark
