1. A politician makes the following claim in a speech: \"Correlation analysis re

Question

1. A politician makes the following claim in a speech: "Correlation analysis research has clearly shown that a lack of education causes people to turn to a life of drugs." What is wrong with this politician's claim? . A. Correlation analysis does not prove that one variable causes another . B. The data to which the politician referred was based on a small sample size . C. The politician misinterpreted the direction of the correlation. . D. It would be unethical to conduct correlation analysis on people's drug use 2."r squared" is the mathematical notation for: o A. The Coefficient of Determination o B. The Coefficient of Variation o C. Spearman's Coefficient of Rank Correlation o D. Pearson's Coefficient of Correlation 3. If both x and y increase together, the Pearson Correlation Coefficient will be A. negative B. positive C. neutral D. none of the above 4. Define the coefficient of determination (r squared). - A. measure of the proportion of variation in y using x as the explanatory variable . B. measure of direction of association between dependent and independent variables C. a and b D. none of the above 5. The variable being predicted is called the: - A. y variable. . B. dependent variable or x. X. D. explanatory variable.

Explanation / Answer

SOLUTION1:

correlation does not cause causation it explains relationship only between two variables.

OPTION A

SOLUTION2:

r squared is called coefficient of determination

OPTIONA

SOLUTION3:

if r is positive

as x increases y increases

direct relationshiip

OPTION B positive

Solution4:

r sq is % variation in Y explained by model.

OPTIONA

Solution5:

being predicted is Y

OPTIONA

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.