Pearson correlation - Samenvattingen, Aantekeningen en Examens

BCPS Exam | questions and answers 2023/24 Unpaired T-test - Continuous data 2 independent samples Paired T-test - Continuous data 2 paired samples ANOVA - Continuous outcome data Categorical exposure data 3+ independent variables ANCOVA - Continuous outcome data Categorical exposure data 3+ independent variables Controls for covariates Wilcoxon Rank Sum Test (Mann-Whitney U Test) - Ordinal data 2 independent samples Wilcoxon Signed Rank Test - Ordinal data 2 paired sampl...

Hypothesis Procedure - 1. Hypothesis 2. Level of Sig 3. Subjects & Data 4. Statistical Method 5. Fail to reject/reject null Hypothesis - null research (alternative) Level of Sig - p<0.05 Statistical Method - -excel gives you R-value (pearson correlation) -find degrees of freedom (npairs-2) -find critical correlation value -finally, compare R-value (absolute value) and critical value |R|>critical value - statistically significant correlation -if R is positive it's direct/vice ...

EPPP EXAM QUESTIONS #2 QUESTIONS WITH COMPLETE ANSWERS miles driven by 100 drivers randomly chosen from the LA phonebook. What stats test should he use to analyse the data? a) t-test b) ANOVA c) MANOVA d) ANCOVA - Answer-t-test A larger F score on an ANOVA demonstrates a: a) less significant effect b) more significant effect - Answer-more significant effect Which statis test would be used to investigate the correlation btwn a continuous variable and a true dichotomy variable? a) ...

CPH Exam Practice Questions and Answers 100% Verified The lengths of stay for six patients were 0, 0, 1, 2, 2, and 16 days. Which is (are) the best measure(s) to summarize these data? A) Mean B) Median C) Median and SD D) Mean and SD E) Median and Range - Correct Answer E) Median and Range An epidemiologist attempts to predict the weight of an elderly person from demispan. She randomly chooses 70 elderly subjects in a particular geographic area and records their weight and demispan me...

Areas Under the Curve correct answers Equal segments (also called just areas) when added up will equal 100% Biased Sample correct answers A sample in which some members of the population are less likely to be included than others No ability to generalize i.e a sample of volunteers Coefficient of Determination correct answers Variation over-lap (remember circles % which is shared) Coefficient of Non-Determination correct answers % of non-overlap (remember circles percent not shared) ...

The lengths of stay for six patients were 0, 0, 1, 2, 2, and 16 days. Which is (are) the best measure(s) to summarize these data? A) Mean B) Median C) Median and SD D) Mean and SD E) Median and Range E) Median and Range An epidemiologist attempts to predict the weight of an elderly person from demispan. She randomly chooses 70 elderly subjects in a particular geographic area and records their weight and demispan measurements in the form of (x i , y i ) for i = 1...70. Given that the val...

46. In an analysis of Hours Studied (X) and Test Scores (Y), the Pearson r is +0.93. Does this score give us the ability to say that studying longer hours produces higher test scores? Why or why not? The term condition matches which of the following ANOVA terms? 47. How is the null hypothesis of the independent-samples t-test verbalized? 48. The two-way X^2 is a test of... 49. Suppose we compute Sx and find it is equal to 9. How do we interpret this number? 50. Nonparametric ...

CPCE Appraisal Test Questions and Asnswers Updated 2024/2025 (GRADED A+) tools Assessment ____ include tests and inventories, observation, interview data, and other techniques. appraisal used interchangeably with evaluation which goes beyond measurement to making judgements about human attributes and behaviors measures of central tendency A distribution of scores (measurements on a number of individuals) can be examined using the following: mean, median, and mode. These are all ___________...

Blank 1: interval Blank 2: ratioParametric correlation requires two continuous variables measured on an Blank 1: -1 Blank 2: +1 or 1The Pearson (product moment) correlation coefficient varies over a range of Blank 1: 0 or zeroThe absence of a relationship is expressed by a coefficient of For these interval and ratio measures of association, match the coefficients with their comments and uses. Match the following ordinal coefficients of association with their comments and uses. Blank 1...

R squared is the: a. coefficient of multiple determination b. coefficient of stability c. coefficient of internal consistency d. silver character on "Star Wars" - correct answer a. coefficient of multiple determination When data points are widely scattered around a regression line, this indicates: a. low homoscedasticity b. low correlation coefficient c. low heteroscedasticity d. high heteroscedasticity - correct answer b. low correlation coefficient Heteroscedasticity - correct ...