Class Notes (836,580)
Canada (509,856)
Statistics (456)
STATS 2B03 (199)
Aaron Childs (197)

The Chi-Square Distribution and the Analysis of Frequencies (1).docx

2 Pages
Unlock Document

Aaron Childs

November 2 , 2012 Stats 2B03: Statistical Methods for Science The Chi-Square Distribution and the Analysis of Frequencies (1) - see Figure 9 in the courseware. There should be a similar amount of vertical variation for each of the four samples 12.3 Goodness of fit tests - example: Mendell bred green and yellow peas  g,g: pure green peas + y,y: pure yellow peas  cross fertilized then to get (according to his theory): g,y  his theory was that the ywllow gene (y) is dominant over the green gene (g). he took 8023 of these g,y peas and cross-fertilized them  g,y + g,y: g,g; g,y; y,g; y,y  according to his theory P = P(yellow pea) = ¾, P = P(green pea) = ¼ 1 2  he observed 6022 yellow peas and 2001 green peas. Are these frequencies consistent with Mendel’s theory?  In general we want to test whether an observed distribution of frequencies is consistent with some hypothesized distribution  H 0 the hypothesized distribution is correct  H A it is not correct  In our example we want to test H : 0 = 1, P = ¼2 H : PA¾, 1≠≠ ¼ 2 Table of observed frequencies Observed frequencies (O)
More Less

Related notes for STATS 2B03

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.