how to calculate proportion of the binomial variable how to test correlation in period two why use a statistical test on periods how to determine the existence of a change in proportion can we test for a change in a period when does the probability of a binomial change change how to determine the existence of a change of proportion in data can p_567 be used to compare multiple periods how to measure t test of period versus period how to find out the proportionality of data how to measure a variation in proportion of a period in the same period how do binomials compare between periods? which period is a binomial variable observed over many period? how to test the presence of a change in proportion? what is the success rate in period 56-7 how do you measure a change in proportion over time how to test the proportionality of a binomial variable over time how to measure the success rate of a binomial variable change in proportion how to test for variation in proportion