Differences between observed and expected ratios can arise by chance. The goodness-of-fit chi-square test can be used to evaluate whether deviations between observed and expected numbers are likely to be due to chance or to some other significant factor.
-A chi-square test comparing observed and expected progeny is carried out, and the probability associated with the calculated chi-square value is 0.72. What does this probability represent?
A) Probability that the correct results were obtained
B) Probability of obtaining the observed numbers
C) Probability that the difference between observed and expected numbers is significant
D) Probability that the difference between observed and expected numbers could be due to chance

Question

Quizplus · Accepted Answer

The probability of 0.72 indicates that there is a 72% chance that the difference between observed and expected numbers is due to random chance, suggesting that the deviations are not statistically significant.

Differences Between Observed and Expected Ratios Can Arise by Chance