Previous PageTable of ContentsNext Page

APPENDIX 1

A. To summarise data

e.g. Statistics 1980 1981 1982
  n : 20 30 51
  mean (x) 20.1 19.5 21.5
  S.D.(s) 6.5 4.0 2.8
  range 18.0-21.6 17.0-21.5 19.5-24.3

1. Calculate overall total, T

Animal genetic resources data banks

2. Calculate total number of observations, N and overall mean,M

Animal genetic resources data banks

3. Calculate annual variance, s2

Animal genetic resources data banks

4. Calculate annual totals, t

Animal genetic resources data banks

5. Calculate overall sum of square, S

Animal genetic resources data banks

6. Calculate overall variance, V and standard deviation, SD

Animal genetic resources data banks

Thus the overall number of observations, mean and standard deviations are 101, 20.6 and 4.2 respectively and range 17.0 to 24.3

B. Metric Conversion

  1. To convert means and standard deviations given in lb to kg, simply divide by 2.21.
  2. To convert means and standard deviations given in inches to cm, simply multiply by 2.54
  3. To convert from Fahrenheit (F) to Celsius (C).

    4. Animal genetic resources data banks

Previous PageTop of PageNext Page