data prep and descriptive stats
... assigning each response a numerical score. • The key to a good coding system is for the coding categories to be mutually exclusive and the entire system to be collectively exhaustive. • To be mutually exclusive, every response must fit into only one category. • To be collectively exhaustive, all pos ...
... assigning each response a numerical score. • The key to a good coding system is for the coding categories to be mutually exclusive and the entire system to be collectively exhaustive. • To be mutually exclusive, every response must fit into only one category. • To be collectively exhaustive, all pos ...
srs.pdf
... Samples and sample values Let N be a positive integer, let [N ] = {1, . . . , N } be a set containing N elements, and let Y : [N ] → R be a given function. In the present context, [N ] is called the population, the elements of [N ] are called statistical units or sampling units, and Y (1), . . . , Y ...
... Samples and sample values Let N be a positive integer, let [N ] = {1, . . . , N } be a set containing N elements, and let Y : [N ] → R be a given function. In the present context, [N ] is called the population, the elements of [N ] are called statistical units or sampling units, and Y (1), . . . , Y ...
Final Exam Study Guide
... an alternative hypothesis Ha. 11. (a) the null hypothesis is false and the alternative hypothesis is true (b) inconclusive; insufficient evidence to show the alternative hypothesis is true 12. No. Out of 500 subjects we expect about 1% of them (5 subjects) to do this well. So, 4 out of 500 with P < ...
... an alternative hypothesis Ha. 11. (a) the null hypothesis is false and the alternative hypothesis is true (b) inconclusive; insufficient evidence to show the alternative hypothesis is true 12. No. Out of 500 subjects we expect about 1% of them (5 subjects) to do this well. So, 4 out of 500 with P < ...
Guidelines for finding sample standard deviation
... What is the sample standard deviation of 5 random people’s heights from this class? 1. Find the mean of the sample data set. 2. Find the deviation of each entry. 3. Square each deviation. 4. Add to get the sum of the squares. 5. Divide by __________ to get the sample variance. 6. Find the square roo ...
... What is the sample standard deviation of 5 random people’s heights from this class? 1. Find the mean of the sample data set. 2. Find the deviation of each entry. 3. Square each deviation. 4. Add to get the sum of the squares. 5. Divide by __________ to get the sample variance. 6. Find the square roo ...
2030Lecture5
... computed a mean • That mean comes from a population of sample means (you just happened to pick one of them) • The mean of the distribution of sample means is the mean of the population • The standard deviation of the sample means is the standard error ...
... computed a mean • That mean comes from a population of sample means (you just happened to pick one of them) • The mean of the distribution of sample means is the mean of the population • The standard deviation of the sample means is the standard error ...
