Computation for central tendencies (UNGROUPED)

Mean is the average of the whole data.
Formula:

 








Median is the middle most value/item of the data. If in case there is no middle (e.g 14 data), add the 7th and 8th data, divided by two.

Mode is the most frequent value on the data. If there is only one mode, it is called unimodal. If there is two mode, it is called bimodal. And if there is three or more mode, it is called multimodal.

For example:
Number of accessories made out of beads production
2.0
2.4
2.5
2.6
2.6
2.7
2.7
2.8
3.0
3.1
3.2
3.3
3.3
3.4
3.4
3.6
3.6
3.6
3.6
3.7
4.4
4.6
4.7
4.8
5.3
10.1

Mean:

Median:

2.0
2.4
2.5
2.6
2.6
2.7
2.7
2.8
3.0
3.1
3.2
3.3
3.3-----X
3.4-----X
3.4
3.6
3.6
3.6
3.6
3.7
4.4
4.6
4.7
4.8
5.3
10.1

Mode:

2.0
2.4
2.5
2.6
2.6
2.7
2.7
2.8
3.0
3.1
3.2
3.3
3.3
3.4
3.4
3.6-----X
3.6-----X
3.6-----X
3.6-----X
3.7
4.4
4.6
4.7
4.8
5.3
10.1

3.6 is the Mode, unimodal.

(Source: MAT381 professor)