Chi squared and expected values. Help please :/

Hi guys!

I need a little help finding the expectedvalues on my table. This is about genetics, by the way.

I know the expected ratio is 1:2:1 and the observed values are as follows:

Red - 62
Pink - 131
White - 67

And the total is 260, of course. I've been searching it everywhere and I must be really stupid because my classmate said it was easy to find :/ and I can't ask my teacher because we're supposed to give it to him as part of our coursework.

Thanks TSR!

So you do like a mean for the expected values but to fit your ratio.
It would be 260/4= 65 Then you multiply by your ratio so would be 65:130:65

I'm assuming that ratio was 1 : 2 : 1?

You have 260 in total.

1 + 2 + 1 = 4 .... your ratio is split into 4 bits.
So divide it by 4 to get 65, to get the value of each 'bit'

To get your expected values:

A ratio of 1 means 1 x 65 = 65
A ratio of 2 means 2 x 65 = 130

Therefore if you have 260 seeds in the ration 1 : 2 : 1, then you expect to get 65 : 130 : 65 seeds.

Thank you very much