Formula
Examples
1) 3 year Simple Moving Average year | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
Sales | 5.2 | 4.9 | 5.5 | 4.9 | 5.2 | 5.7 | 5.4 | 5.8 | 5.9 | 6 | 5.2 | 4.8 |
Calculate 3 year Simple Moving Average
Solution:
The value of table for `x` and `y`
x | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
---|
y | 5.2 | 4.9 | 5.5 | 4.9 | 5.2 | 5.7 | 5.4 | 5.8 | 5.9 | 6 | 5.2 | 4.8 |
---|
Calculation of 3 year moving averages of the data
(1) year | (2) Sales | (3) 3 year moving total | (4) 3 year moving average `(3)-:3` |
1 | 5.2 | | |
2 | 4.9 | `5.2+4.9+5.5=15.6` | `15.6-:3=5.2` |
3 | 5.5 | `4.9+5.5+4.9=15.3` | `15.3-:3=5.1` |
4 | 4.9 | `5.5+4.9+5.2=15.6` | `15.6-:3=5.2` |
5 | 5.2 | `4.9+5.2+5.7=15.8` | `15.8-:3=5.2667` |
6 | 5.7 | `5.2+5.7+5.4=16.3` | `16.3-:3=5.4333` |
7 | 5.4 | `5.7+5.4+5.8=16.9` | `16.9-:3=5.6333` |
8 | 5.8 | `5.4+5.8+5.9=17.1` | `17.1-:3=5.7` |
9 | 5.9 | `5.8+5.9+6=17.7` | `17.7-:3=5.9` |
10 | 6 | `5.9+6+5.2=17.1` | `17.1-:3=5.7` |
11 | 5.2 | `6+5.2+4.8=16` | `16-:3=5.3333` |
12 | 4.8 | | |
2) 3 year Simple Moving Average year | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
Sales | 30 | 25 | 35 | 25 | 20 | 30 | 35 | 40 | 30 | 45 |
Calculate 3 year Simple Moving Average
Solution:
The value of table for `x` and `y`
x | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
---|
y | 30 | 25 | 35 | 25 | 20 | 30 | 35 | 40 | 30 | 45 |
---|
Calculation of 3 year moving averages of the data
(1) year | (2) Sales | (3) 3 year moving total | (4) 3 year moving average `(3)-:3` |
1 | 30 | | |
2 | 25 | `30+25+35=90` | `90-:3=30` |
3 | 35 | `25+35+25=85` | `85-:3=28.3333` |
4 | 25 | `35+25+20=80` | `80-:3=26.6667` |
5 | 20 | `25+20+30=75` | `75-:3=25` |
6 | 30 | `20+30+35=85` | `85-:3=28.3333` |
7 | 35 | `30+35+40=105` | `105-:3=35` |
8 | 40 | `35+40+30=105` | `105-:3=35` |
9 | 30 | `40+30+45=115` | `115-:3=38.3333` |
10 | 45 | | |
This material is intended as a summary. Use your textbook for detail explanation.
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