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Serie
s
Serie
s5.2 General Series (1/4)
Series NotationSeries NotationTnn = 2n - 3
Term Number (nn must be positive)
Example:
Find the 12th term
T1212 = 2 x 12 - 3= 2 1
2
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s
Serie
s5.2 General Series (2/4)
5
1r
2r
Sigma NotationSigma NotationThe Greek letter Σ means to sum a series.
21 22 23 24 25
1 4 9 16 25
55
3
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s5.2 General Series (3/4)
5
3m
1m2
Sigma NotationSigma NotationThe Greek letter Σ means to sum a series.
)13x2(
5
)14x2( )15x2(
7 9
21
4
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s
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s5.2 Finding the Mean using Σ (4/4)
Scorex
Tally Freq fxf12345
Σf = Σfx =
34762
1x332x483x7214x6245x210
22 66
ΣfxΣf
x =
6622
=
= 3
xxxxx