27 Questions
Which statistical test is used to evaluate the relationship between two variables in a population?
Chi Square Test for Independence
What is the formula for calculating the Z-Score?
Z = (X-M)/SD
What is the measure of symmetry in a distribution called?
Skewness
What is the average squared deviation around the mean called?
Variance
Which of the following is true about the Stanford-Binet Intelligence Scale?
It was developed by Lewis Terman
What is the formula for calculating Intelligence Quotient (IQ)?
IQ = (MA/CA) x 100
Who developed the first ever personality test, the Woodworth Personal Data Sheet?
Sam Beck
What is the purpose of exploratory data analysis?
To summarize the main characteristics of data
Which of the following is a data reduction technique?
Principal components
What is the correlation statistic used for interval/ratio variables?
Pearson's r
Who is considered the Father of Classical Test Theory?
Charles Spearman
What does Classical Test Theory assume about errors of measurement?
Errors of measurement are random
Which type of test measures a person's previous learning?
Achievement test
Which type of test measures a person's potential for learning or acquiring skills?
Aptitude test
What is the purpose of a maximum performance test?
To measure what a person can achieve when making maximum effort
Which correlation coefficient is used when both variables are dichotomous and at least one of them is a true dichotomous variable?
Phi coefficient
What is the standard error of estimate (Syx)?
The standard deviation of the residuals
What does the coefficient of determination (r2) tell us?
The proportion of the total variation in scores on Y that we know as a function of information about X
What is the measure of non-association between two variables called?
Coefficient of alienation
Which formula is used to convert a raw score into a z-score?
$X = m(Z) + SD$
What is the formula for the interquartile range?
$IQR = Q3 - Q1$
What is the formula for the regression line?
$Y' = a + bX$
What is the formula for the Pearson product moment correlation coefficient?
$r = \frac{cov(X,Y)},{SD(X) \times SD(Y)}$
Who is considered the Father of Comparative Psychology?
Sir Francis Galton
Which law states that the just-noticeable difference between two stimuli is proportional to the magnitude of the stimuli?
Weber's Law
Who is considered the Father of Mental Testing?
Alfred Binet
What is the purpose of a Power Test?
To present complex questions
Test your knowledge of statistical methods used with dichotomous variables. Learn about biserial correlation, point biserial correlation, and phi coefficient in this quiz.
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