BST 322 Study guides, Class notes & Summaries

coefficient of determination - Answer r2 linear regression - Answer an algorithm to find a precise line of fit for a set of data regression equation - Answer Y'= a +bX is the formula for best fiting straight line to charecterize the linear relationship between X and Y. Intercept concept - Answer Slope - Answer The steepness of a line on a graph Residulas - Answer The differences between Y and Y'

BST 322 Week 4 Test Questions with Correct Answers coefficient of determination - Answer-r2 linear regression - Answer-an algorithm to find a precise line of fit for a set of data regression equation - Answer-Y'= a +bX is the formula for best fiting straight line to charecterize the linear relationship between X and Y. Intercept concept - Answer- Slope - Answer-The steepness of a line on a graph Residulas - Answer-The differences between Y and Y' Least squares - Answer-Sta...

BST 322 Week 3 Test Questions with Correct Answers chi-square test of independence - Answer-- basic non-parametric test - determine if two categorical variables are independent; basically if they have a relationship - compares the observed and expected cell frequencies of a contingency table expected frequencies - Answer-- we would expect to see if the subjects were distributed through the table randomly observed frequencies - Answer-- those counts we literally got in the course of some...

BST 322 Week 2 Test Questions with Correct Answers Sampling error - Answer-Error in a statistical analysis arising from the unrepresentativeness of the sample taken.Reflects the tendency for statistics to fluctuate from one sample to another. Sampling distribution - Answer-Are actually probability distributions, is central to estimates of sampling error. Sampling distribution of the mean - Answer-A theoretical probability distribution of the means of an infinite number of samples given si...

BST 322 Unit 1 Test Questions with Correct Answers Evidence Based Practice (EBP) 4 Steps in EBP Include - Answer-Based on research results. 1. Asking Clinical Questions 2. Searching for research evidence that addresses the question 3. Appraising the evidence and then 4. Integrating the evidence with ones own clinical expertise & information about patient preferences. Qualitative data - Answer-Verbal, narrative information. Example: Male or female, Happy, sad, depressed Quantitativ...

BST 322 Quiz 3 Practice 2 Questions and Answers Chi square test for independence compares observed frequencies with: - Answer- Expected frequencies The test statistic calculated in the process of a Kruskall-Wallis test is H. - Answer-true This is used when the expected cell frequency in a 2X2 table is less than 5 - Answer- Fisher's exact test If the Chi-Square statistic is less than the table value, we accept the null hypothesis. - Answer-true Chi-square tests can only be condu...

BST 322 Final Test Questions with Correct Answers This is used when a conservative approach is desired and an expected cell frequency is less than 5 in a 2X2 table. - Answer-Fisher's exact test It is important to assess the magnitude or strength of a relationship because this assists you with deciding whether or not a variable A causes variable B. True or False - Answer-False A Z score of +/-1.96 is equivalent to these values on a normal distribution. - Answer-+/-2 standard deviations ...

BST 322 Final Exam Questions with Correct Answers Information collected in a numerical form is called - Answer-quantitative Which measure of central tendency is at the highest point on a graph? - Answer-mode Correlation coefficient tests allow you to determine if a cause and effect relationship is present. - Answer-false Data that are categorical but can be rank-ordered in a meaningful way are called: - Answer-ordinal If the mean is to the left of the median, what is true? - Answer-...

BST 322 Final Exam Questions and Answers All Correct This is used when a conservative approach is desired and an expected cell frequency is less than 5 in a 2X2 table. - Answer-Fisher's exact test It is important to assess the magnitude or strength of a relationship because this assists you with deciding whether or not a variable A causes variable B. True or False - Answer-False A Z score of +/-1.96 is equivalent to these values on a normal distribution. - Answer-+/-2 standard deviation...

BST 322 Exam Questions with Correct Answers When calculating a Pearson's correlation coefficient, it is necessary that both variables have approximately normal distributions. - Answer-True The variable "Group assignment" is an example of what level of measurement? - Answer-Nominal Statistics that allow for inferences to be made about a population from the study of a sample are known as: - Answer-Inferential Which measure of variability is used most often in conjunction with the me...

The primary objective of the analysis is to discern patterns and insights regarding the interplay of poverty and employment status within the studied demographic group. Utilizing StatCrunch, a Contingency Table was constructed based on the subjects' poverty levels (categorized as above poverty and below poverty) and their corresponding work status (classified as either yes or no).