Pearson correlation - Samenvattingen, Aantekeningen en Examens
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MATH 112 Correlation and Regression
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Consider the following cases: 
1 As salaries increase, the amount spent on luxury 
goods also increases. 
2 As unemployment increases, the amount spent on 
luxury goods decreases. 
3 There is a relationship between gender and the 
amount spent on clothes. 
Math031 - Mathematics in the Modern World 2 
Correlation and Regression Correlation is a statistical 
method used to determine whether a relationship 
between variables exists. 
Regression is a statistical method used to describe the 
nature o...
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HBIO 205 Lab Test Questions & Answers!!
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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 ...
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CPCE Appraisal Test Questions and Asnswers Latest 2024/2025 Already Passed! GRADED A+
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CPCE Appraisal Test Questions and Asnswers Latest 2024/2025 Already Passed! GRADED A+. measurement general process of determining the dimensions of an attribute or trait 
assessment processes and procedures for collecting information about human behavior 
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 
...
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BCPS Exam | questions and answers 2023/24
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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...
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EPPP EXAM QUESTIONS #2 QUESTIONS WITH COMPLETE ANSWERS
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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) ...
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Elementary Statistics Chapter 1,2,3 || Already Passed.
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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) 
 
...
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CPH Exam Practice Questions and Answers 100% Verified
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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...
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CPH Exam | Questions With Verified Solutions| Graded A+
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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...
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CPCE Appraisal Test Questions and Asnswers Latest 2024/2025 (GRADED A+)
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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 
___________...
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WGU APPLIED STATISTICS FINAL EXAM. QUESTIONS WITH VERIFIED ANSWERS.
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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 ...
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