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Statistics: Total Score and Mean Calculation

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Statistics: Total Score and Mean Calculation

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Questions and Answers

What is the formula to calculate the Total Score (TS) or ∑X?

TS = √(∑X)
TS = N / ∑X
TS = √(N * ∑X)
TS = ∑X / N (correct)

Which formula is used to calculate the Deviation from the Mean?

x = X + M
x = X / M
x = X * M
x = X - M (correct)

What does SS stand for in statistics?

Sample Size
Sum of Squares (correct)
Standard Score
Sum of Sources

What does df represent in statistical analysis?

Degrees of Freedom (B) Signup and view all the answers

What is the formula to calculate Sample Variance (s²)?

s² = SS / df (A) Signup and view all the answers

What is the purpose of calculating a Z-score in statistics?

To standardize a raw score and compare it to other scores in a distribution (A) Signup and view all the answers

What does 'SS' represent in statistics?

Size of the variable being observed in a data set (B) Signup and view all the answers

How is the 'Population Mean' denoted in statistics?

μ= ∑X/N (D) Signup and view all the answers

Which formula is used to calculate 'Degrees of Freedom'?

s²= SS/df (B) Signup and view all the answers

What is the purpose of calculating 'Standardized Score' in statistics?

To find the typical/majority/true score in a sample (D) Signup and view all the answers

What is represented by the formula 'z = x/s' in statistics?

Amount of how much the raw score deviates from the mean, squared (A) Signup and view all the answers

How is the 'Sample Mean' calculated in statistics?

M= ∑X/n (A) Signup and view all the answers

'Deviation from the Mean x' can be calculated by which formula?

(X - M) (A) Signup and view all the answers

'Sum of Squares' (SS) in statistics indicates:

'SS = ∑x²', how dispersed the raw scores are (B) Signup and view all the answers

'Sample Variance' (s²) can be defined as:

's² = SS/df', dispersion of scores from each other (B) Signup and view all the answers