
Biostatistics
Quiz
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Other
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University
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Practice Problem
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Easy
Anupriya S
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for simple linear regression?
A. y = a + bx
B. y = ax + b
C. x = a + by
D. x = ay + b
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is regression?
A. A measure of central tendency
B. A measure of spread
C. A measure of the strength of a relationship between two variables
D. A statistical method for predicting a variable based on another variable
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for calculating the correlation coefficient?
A. Σxy / Σx
B. Σx / Σy
C. Σx² / Σy²
D. Σxy / √(Σx² Σy²)
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the range of the correlation coefficient?
A. 0 to 1
B. -1 to 1
C. -∞ to ∞
D. 0 to ∞
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is correlation?
A. A measure of central tendency
B. A measure of spread
C. A measure of the strength of a relationship between two variables
D. A measure of variability
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for calculating the interquartile range?
A. Third quartile - First quartile
B. Second quartile - First quartile
C. Third quartile - Second quartile
D. Fourth quartile - Third quartile
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the formula for calculating the coefficient of variation?
A. Standard deviation / Mean
B. Variance / Mean
C. Mean / Standard deviation
D. Mean / Variance
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