Question

Total ridge count finger printing dna lab

females 75,99,175,123,45,203,72,279,164,48,92

Males 165,139,171,134

Find mean Total ridge count, Mean ridge count for females, and Mean Total ridge count for males. What is the trc class average? the average trc for the males in the class and for the females is there a difference between male and demale trcs? what might account for the difference ? How do the class data compare to the average published by holt (1968) 145-for males and 126 for females?

Answer 1

Ans: Mean total ridge count = Total ridge count of both males + females = 1984/15 = 132

sample number

Mean total ridge count = 132

Same way Mean ridge count for females = 125

Same way Mean ridge count for males = 152

What is the trc class average?

Class average is the recorded individual trc with respect to expected/assumed average for females and males 126 and 145 respectively considering 100%

Ex: 75 x100/126 = 59.52 like this we have calculate for each recorded individual and mean of all 11 female value = 98.65

Similarly for males = 105.99

By looking at above values we can say that there is not significant difference between male and female class average.

Class data published by Holt for males is 145, our calculated is 106, meaning 39 points away

Class data published by Holt for females is 126, our calculated is98.65, meaning 27 points away. Polygenic traits of ridge count of fingers if close to colts average its highly significant or valid for a given population.