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This Concept Map, created with IHMC CmapTools, has information related to: Sampling methodology, Sampling Methodology relies on Central Limit Theorem, determine the confidence level and its corresponding Z value 3 Find the means, standard deviations, and sample size of both samples, Select random sample from population requires Selection of what is to be ranbdomized, Find the difference between the two sample means 5 Perform the calculation of squaring each sample's standard deviation, and dividing it by n. Add these two results together and take the result's square root., 7 steps 1 Define population to be studied, Define population to be studied 2 Choose confidence level and sample size, Select relevant data from items in sample 5 Summarize data into a statistic -- a numerical mean or categorical proportion, take and define two populations 2 determine the confidence level and its corresponding Z value, Perform the calculation of squaring each sample's standard deviation, and dividing it by n. Add these two results together and take the result's square root. 6 Then multiply the result by Z to find the margin of error., Select random sample from population be sure it is Truly random?, Sampling Methodology that involves One Population, 7 steps 1 take and define two populations, Summarize data into a statistic -- a numerical mean or categorical proportion 6 Calculate the margin of error standard deviation divided by square root of sample size n, Choose confidence level and sample size need to determine What size is appropriate, Select random sample from population 4 Select relevant data from items in sample, Find the means, standard deviations, and sample size of both samples be sure it is Truly random?, Calculate the margin of error standard deviation divided by square root of sample size n 7 Take statistic plus or minus margin of error to get final estimate of the parameter, Then multiply the result by Z to find the margin of error. 7 Take the difference between the means (step 4) plus or minus the margin of error to obtain the confidence interval of the difference., One Population uses 7 steps, Find the means, standard deviations, and sample size of both samples 4 Find the difference between the two sample means