Would these paragraphs be correct? : The Chi Squared test is a nonparametric alternative to the t-test to be used when the variables of interest are dichotomous in nature. Furthermore the Chi squared test along with the Fisher’s exact test can be used as a nonparametric alternative to the correlation coefficient and is primarily utilised when the two variables of interest are categorical in nature. Fisher’s exact test is used instead of the Chi Squared test when expected frequencies in each cell being analyzed are less than 6 and when samples are small.

The Kaplan-Meier survival analysis like Cox proportional-hazards regression is used to compare survival curves in two or more group but unlike Coxs proportional-hazards regression model it is unable to analyze the effect of several risk factors on survival. It is used when analysing survival variables in cases where time is the most prominent variable.

I could just do with a simplified explanation/definition of the intraclass correlation and the cronbach's alpha. If anyone could help that'd be much appreciated.