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practice ii - Hacettepe University Department of Biostatistics
... Example: A group of patients have a mean body mass index (BMI) of 22 and a standard deviation 4. BMIs are approximately normally distributed. A subject is classified as obese if his BMI has greater than 30 BMI. In this group of patients what is the propotion of obese patients? What is the proportio ...
... Example: A group of patients have a mean body mass index (BMI) of 22 and a standard deviation 4. BMIs are approximately normally distributed. A subject is classified as obese if his BMI has greater than 30 BMI. In this group of patients what is the propotion of obese patients? What is the proportio ...
Powerpoint slides
... However, the lecture is getting meaner • If you sample from a population you will get different values for x bar each time • We don’t care about samples in the long run, we care about populations • Calculating is pretty hard, umm it takes forever • Used sometimes, elections, the census ...
... However, the lecture is getting meaner • If you sample from a population you will get different values for x bar each time • We don’t care about samples in the long run, we care about populations • Calculating is pretty hard, umm it takes forever • Used sometimes, elections, the census ...
Psychology 210 Psychometric Methods
... of a set of scores from their mean, you will always get 0. This is one of the special mathematical properties of the mean. ...
... of a set of scores from their mean, you will always get 0. This is one of the special mathematical properties of the mean. ...
Estimating Means and Proportions
... compute the sample mean. It turns out to be 5.25oz. • Point Estimate: Our best estimate of the population mean is the sample mean 5.25oz. ...
... compute the sample mean. It turns out to be 5.25oz. • Point Estimate: Our best estimate of the population mean is the sample mean 5.25oz. ...
Your favorite professional football team (I shall refer to them as the
... An economist is interested in studying the incomes of consumers in a particular region. The population standard deviation is known to be $1,000. A random sample of 50 individuals resulted in an average income of $15,000. What is the upper end point in a 99% confidence interval for the average income ...
... An economist is interested in studying the incomes of consumers in a particular region. The population standard deviation is known to be $1,000. A random sample of 50 individuals resulted in an average income of $15,000. What is the upper end point in a 99% confidence interval for the average income ...