Effect size
... Imagine the following research looking at the effects of the drug, AZT, if any, on HIV positive patients. In others words, does a group of AIDs patients given AZT live longer than another group given a placebo. If we conduct the experiment correctly - everything is held constant (or randomly distrib ...
... Imagine the following research looking at the effects of the drug, AZT, if any, on HIV positive patients. In others words, does a group of AIDs patients given AZT live longer than another group given a placebo. If we conduct the experiment correctly - everything is held constant (or randomly distrib ...
Combining Judgment and Probability Sample Data Across Space
... Weighted least squares was used to t an exponential variogram model to method of moments estimates of the spatial variogram (Cressie 1991) obtained by pooling the available data over time. The two sampling designs yielded similar estimated ranges of spatial correlation (31.7 km for the probability ...
... Weighted least squares was used to t an exponential variogram model to method of moments estimates of the spatial variogram (Cressie 1991) obtained by pooling the available data over time. The two sampling designs yielded similar estimated ranges of spatial correlation (31.7 km for the probability ...
June 1
... We have a sample of 500 students whose average score on some standardized test is 461. We think they are a particularly gifted bunch. Assume the general student population has a distribution of scores that is approximately normal with µ = 450 and = 100. Does our sample come from a population with ...
... We have a sample of 500 students whose average score on some standardized test is 461. We think they are a particularly gifted bunch. Assume the general student population has a distribution of scores that is approximately normal with µ = 450 and = 100. Does our sample come from a population with ...
The 2 -test
... Characteristics of the point estimate for the population mean – Xi = Random variable representing the value of the ith observation in a sample of size n, (i=1, 2, …, n) – Assume that all observations Xi are independent random variables – The population mean = E[Xi]= – The population standard devi ...
... Characteristics of the point estimate for the population mean – Xi = Random variable representing the value of the ith observation in a sample of size n, (i=1, 2, …, n) – Assume that all observations Xi are independent random variables – The population mean = E[Xi]= – The population standard devi ...