A. Given the observed values below, is there an agreement between the expected and observed ratios? Does it fit the 3:1 ratio? State the reason behind. Phenotypes (Purple is dominant Observed values over yellow corn) Purple com Yellow corn 175 52
A. Given the observed values below, is there an agreement between the expected and observed ratios? Does it fit the 3:1 ratio? State the reason behind. Phenotypes (Purple is dominant Observed values over yellow corn) Purple com Yellow corn 175 52
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Solve Chi-square test
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Activity No. 07
CHI-SQUARE TEST
The Chi-square test will be used to compare phenotypic values derived from the actual crosses to the
expected values from the theoretical crosses. This test is a simple statistical test to evaluate the amount of
deviation from the expected equal frequency ratio in each class The chi-square test can be used to test any ratio
goodness of fit. The calculated chi-square value is obtained by the formula: X? = E (O-E)/ E. Where,
O- observed number on the actual cross; observed value
E- calculated or expected frequency (from the corresponding theoretical cross)
E- summation symbol which means that you'll have to perform a calculation for every single data item
in your data sct.
ОВJЕСТIVES
The students should be able to:
To compare phenotypic data derived from actual crosses to expected values using the Chi-square test
b. To bc able to interpret the results of chi-square values derived from computations of monohybrid crosses
a.
MATERIALS
Observed data from the Monohybrid experiment (Results of the experiments from the previous batch)
PROCEDURE:
A. Given the observed values below, is there an agreement between the expected and observed ratios? Does
it fit the 3:1 ratio? State the reason behind.
Phenotypes (Purple is dominant Observed values
over yellow corn)
Purple com
175
|52
Yellow corn
1|Page
Transcribed Image Text:B. Given the observed values below, is thcre an agreement between the expected and observed ratios? Does
it fit the 3:1 ratio? State the reason behind.
Phenotypes (Purple is dominant Observed values
over yellow corn)
|Purple corn
Yellow corn
176
52
C. Given the observed values below, is there an agreement between the expected and observed ratios? Does
it fit the 3:1 ratio? State the reason behind.
Phenotypes (Purple is dominant Observed values
over yellow corn)
Purple corn
Yellow corn
227
32
2 |Page
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