Line charts
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. Which chart is best for showing how the temperature in your town changes each month?
2. On a line chart that shows change over time, what usually goes along the horizontal (bottom) axis?
3. A line on a chart keeps climbing from left to right. What does this trend show?
4. True or false: A line chart joins its points with a line.
5. A line chart has two lines: one for Class 5A and one for Class 6B reading minutes each week. Why use multiple lines?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1line chart | AThe overall direction a line takes, such as going up, going down or staying flat | |
| 2trend | BFavourite pets are separate categories, not time. A line chart needs time on the bottom axis. A column chart would suit this data better. | |
| 3Time goes on the horizontal axis (along the bottom) of a line chart | CA chart that joins points with a line to show how a value changes over time | |
| 4A line chart with multiple lines compares two groups over the same time | Dx-axis: Mon, Tue, Wed, Thu, Fri | |
| 5Line chart showing favourite pets: dogs, cats, fish | EA line going down means the value fell. The trend shows sales went down, not up. | |
| 6The line goes down from Jan to Mar, so sales went up. | FLines: Class 5A and Class 6B by week |
C
Definitions
line chart
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
chart = _________(days, temps)
2.
days = ["Mon", "Tue", "Wed"]
temps = [18, 21, 24]
lineChart(x=____, y=temps)
3.
if endValue _ startValue:
trend = "up"
4.
addLine(boysData)
_______(girlsData)
showLegend()
5.
days = ["Mon", "Tue", "Wed"]
lineChart(x=days, _=temps)
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
Chart type: line
B
X axis: Week
C
Y axis: Height (cm)
D
Points are joined by bars
Question 2
A
Chart type: pie
B
X axis: Month
C
Y axis: Rain (mm)
Question 3
A
Chart type: line
B
Y axis: Temperature (C)
C
X axis: Favourite colour
Question 4
A
Points fall from left to right
B
The trend goes up
C
The line slopes upwards
Question 5
A
Chart type: line
B
Legend: Red=Class A, Red=B
C
Red line: Class A scores
D
Blue line: Class B scores
Answer Key
Line charts
Section A: Quick Questions
Q1
A — Line chart
Q2
A — Time, like days, months or years
Q3
B — The value is going up over time
Q4
A — True
Q5
B — To compare how two groups change over the same time
Section B: Match the Pairs
Q1
line chart → A chart that joins points with a line to show how a value changes over time
Q2
trend → The overall direction a line takes, such as going up, going down or staying flat
Q3
Time goes on the horizontal axis (along the bottom) of a line chart → x-axis: Mon, Tue, Wed, Thu, Fri
Q4
A line chart with multiple lines compares two groups over the same time → Lines: Class 5A and Class 6B by week
Q5
Line chart showing favourite pets: dogs, cats, fish → Favourite pets are separate categories, not time. A line chart needs time on the bottom axis. A column chart would suit this data better.
Q6
The line goes down from Jan to Mar, so sales went up. → A line going down means the value fell. The trend shows sales went down, not up.
Section C: Definitions
Q1
line chart — A chart that joins points with a line to show how a value changes over time. Time goes along the bottom axis, so you can see if the trend goes up or down.Section D: Fill in the Blanks
Q1
chart = lineChart(days, temps)Q2
days = ["Mon", "Tue", "Wed"]
temps = [18, 21, 24]
lineChart(x=days, y=temps)Q3
if endValue > startValue:
trend = "up"Q4
addLine(boysData)
addLine(girlsData)
showLegend()Q5
days = ["Mon", "Tue", "Wed"]
lineChart(x=days, y=temps)Section E: Spot the Error
Q1
D — A line chart joins its points with a line, not bars. Bars belong to a column or bar chart. It should say: Points are joined by a line.
Q2
A — A pie chart shows parts of a whole. It cannot show how rain changes month by month. To show change over time the type should be line.
Q3
C — On a line chart the horizontal (x) axis shows time. Favourite colour is not time. It should be something like: X axis: Hour of the day.
Q4
A — The other lines say the trend goes up and the line slopes upwards. So the points must rise from left to right, not fall.
Q5
B — With more than one line, each line needs its own colour so the legend can tell them apart. Class B should be Blue, not Red.