Fieldwork (IA)‎ > ‎6. Data Analysis‎ > ‎Statistics‎ > ‎Basic Stats‎ > ‎

1. Mean



Mean
: the average value


EXCEL formula: =AVERAGE(sample)









Example: we have collected the age of 15 men and 14 women as follows:
  • Men: 18, 19, 23, 25, 30, 30, 35, 36, 39, 45, 54, 66, 66, 66, 74
  • Women: 19, 19, 24, 29, 37, 39, 48, 57, 69, 70, 72, 75, 82, 83
    (tip: it’s a good idea to list the values from low to high)
  • Meanmen = (sum of all values) / (number of values) = 626/15 = 41.7 yrs
  • Meanwomen = 723/14 = 51.6 yrs

Conclusion: the average man in our sample is younger than our average women

Run a Similarity test to see if you can infer that the entire populations are actually different, based on these samples.

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