Presenting Data - howden-le-wear.durham.sch.uk · Presenting Data Learning Objective: To interpret...
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Presenting Data Learning Objective: To interpret and present continuous data using line graphs. www.planbee.com
Transcript of Presenting Data - howden-le-wear.durham.sch.uk · Presenting Data Learning Objective: To interpret...
Presenting Data
Learning Objective: To interpret and present continuous data using line graphs.
www.planbee.com
www.planbee.com
Did you know that there are two types of
data which we can present using bar
charts and line graphs?
continuous
discrete
Let’s find out about the differences between
them...
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Discrete DataThe word ‘discrete’ means separate.
This table shows data for a survey about how children travel to school.This date is discrete, or separate, because you have to count the different
ways of travelling separately.
Walk Bicycle Scooter Car Taxi Bus
9 2 6 6 0 7
Would you use a pictogram, a bar chart or a line graph to show this data? Why?
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Continuous DataTime questions usually produce continuous data.
Week 1 Week 2 Week 3 Week 4 Week 5 Week 6
21cm 24cm 26.5cm 29cm 33cm 36cm
I measured my cactus once a week. Here are the measurements.
This data is continuous because the cactus continues to grow all the time. It didn’t suddenly jump from one
measurement to the next - it grew continuously!
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Because continuous data shows something which is continuously changing over time, line graphs often have curved lines to show data.
What do you think? Are curved lines better for showing continuous data? Why?
Average temperatures at Southend-on-sea, 2015.
0°C
5°C
10°C
15°C
20°C
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec0°C
5°C
10°C
15°C
20°C
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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0°C
5°C
10°C
15°C
20°C
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average temperatures atSouthend-on-sea, 2015.
We can look at line graphs showing continuous data
and make statements about it.
I can see that it started to get cooler in Southend-
on-sea during August.
What can you see? What statements can
you make?
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0°C
5°C
10°C
15°C
20°C
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average temperatures atSouthend-on-sea, 2015.
We can even make predictions by looking at line graphs!What might happen during 2016?
2016 2017
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Were your predictions
similar to these?
0°C
5°C
10°C
15°C
20°C
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2016 2017
“The temperature will be similar during the next year.”
“It will start to get warmer during February or March.”
“The hottest months will be July and August.”
“The temperature may rise as high as 15–20°C during June–September.”
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Life expectancy for men in England: 1912–2012
0
20
40
60
80
1912 1932 1952 1972 1992 2012
What statements can you make about the data in this line graph?
Can you make any predictions by looking at this data?
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Life expectancy for men in England: 1912–2012
0
20
40
60
80
1912 1932 1952 1972 1992 2012
Were your statements and predictions like these?
Life expectancy has continuously increased in the last 100 years.
Life expectancy has increased by more than 20 years since 1912.
Life expectancy was probably lower before 1912.
Life expectancy will continue to increase in the future.
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This line graph is missing some labels and its title! I know it shows data for one of these. Can you help me? Which one do you think the
line graph shows?
The temperature of a mug of coffee (minutes)
The water temperature at Brighton beach (months)
The growth of the population of Britain (years)
a
b
c
TIME
?
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Did you get it right? The mug
of coffee cooled down over time.
The temperature of a mug of coffee (minutes)
The water temperature at Brighton beach (months)
The growth of the population of Britain (years)
a
b
c
0°C
15°C
30°C
45°C
60°C
75°C
90°C
0 5 10 15 20 25 30 35 40 45 50 55 60
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The water temperature (°C) at Brighton beach (months)
The growth of the population (millions) of Britain (years)
b
c
Match the remaining titles to the line graphs.
TIME
?
TIME
?
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The water temperature (°C) at Brighton beach (months)
The growth of the population (millions) of Britain (years)
b c
0
4.5
9
13.5
18
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec55
57.5
60
62.5
65
1974 1979 1984 1989 1994 1999 2004 2009 2014
That was tricky! Did you get them right? What were the reasons for your choices?
