For the plain english, formula 9.4 will be see since the “square the real difference, split by share”, and that effortless formula is often did because of rational data alone.
Today we could come back to our example out of over which have 62 adult and you may 38 recombinant allele combinations and use equation 9.4 to find the compatible c dos worthy of. The essential difference between the latest wide variety on two observance categories (62-38 = 24) was squared in order to produce 576, and therefore really worth try split up from the total measurements of the fresh tested population (100) in order to produce 5.76.
In the backcross analogy not as much as dialogue, you will find laid out a few prospective benefit kinds: recombinant and you can parental. Knowing the matter either in group, along with the full decide to try size, contains the matter on the almost every other classification. Therefore, what amount of amounts of freedom in this case is certainly one.
That have a c 2 value additionally the amount of degrees of versatility inside-hands, one could move on to a-c dos chances research-right up table for instance the one displayed inside the Desk 9.dos. That it dining table reveals the fresh new c dos values that will be from the additional “P beliefs”. A great P really worth is a measure of the possibility in which a particular study place, otherwise one more tall, could have occured by simply opportunity in case your null hypothesis have been in reality correct.