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Slide 2

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Advice
Do not spend too long on 1 question ­ If you
cannot see what to do leave it out & return to
it at the end if you have time.
Show working whenever you can ­ You may
get method marks even if your final answer is
wrong.
Remember to look at the formula page ­
There may be something there that could
help you.
Don't panic! ­ You can do this!!!…read more

Slide 3

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Cumulative frequency…read more

Slide 4

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A golf club has 200 members. Their ages are shown in the frequency
table below.
A cumulative frequency (or a "less than") table can be drawn from this
data.
Age (a years) Frequency Age (a years) Cumulative frequency
0 a < 10 8 8 a < 10 8
10 a < 20 26+26 a < 20 34
20 a < 30 32+32 a < 30 66
30 a < 40 45+45 a < 40 111
40 a < 50 37+37 a < 50 148
50 a < 60 29+29 a < 60 177
60 a < 70 16+16 a < 70 193
70 a < 80 7 +7 a < 80 200
How old is the youngest/oldest person?…read more

Slide 5

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We can now use this to draw a cumulative frequency graph.
Age (a Cumulative
years) frequency
a < 10
10 8
a < 20
20 34
a < 30
30 66
a < 40
40 111
a < 50
50 148
a < 60
60 177
a < 70
70 193
a < 80
80 200…read more

Slide 6

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We can now use this to draw a cumulative frequency graph.
Age (a Cumulative
years) frequency
a < 10 8
a < 20 34
a < 30 66
a < 40 111
a < 50 148
a < 60 177
a < 70 193
a < 80 200…read more

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