1

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

Serie

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

Serie

s

Serie

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

Serie

s

Serie

s5.2 Finding the Mean using Σ (4/4)

Scorex

Tally Freq fxf12345

Σf = Σfx =

34762

1x332x483x7214x6245x210

22 66

ΣfxΣf

x =

6622

=

= 3

xxxxx