Normal Q–Q plot
Histogram
When the number of bins is 0, plot will use the default number of bins
Density plot
Because P < 0.05, we concluded that the age of the lymph node-positive population was significantly different from 50 years old. Thus the general age was not 50. If we reset the specified mean to 44, we could get P > 0.05
Normal Q-Q plot
Histogram
When the number of bins is 0, plot will use the default number of bins
Density plot
In this example, P value of F test was about 0.15 (>0.05), indicating the equal variance in the data. Thus, we should refer to the results from 'Two-Sample t-test'
In this example, we concluded that the age of lymph node positive population with ER positive was not significantly different from ER negative (P=0.55, from 'Two-Sample t-test')
Normal Q-Q plot
Histogram
When the number of bins is 0, plot will use the default number of bins
Density plot
From the default settings, we concluded that the drug has no significant effect on the sleep hour. (P=0.2)