Statistics for Statistics and Data Analysis

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Hint	Answer	% Correct
The average value in a data set	Mean	95%
The value of the 50th percentile in a data set	Median	81%
The most frequent value in a data set	Mode	81%
Measure of variation of a set of data values	Standard deviation	77%
Each 25% of a data distribution	Quartile	70%
A subset of data taken from a population	Sample	70%
Greek letter symbolizing the above	Sigma	70%
Indicator of statistical significance of a test	p-value	67%
Data distribution that is bell-shaped	Normal	63%
An unusually large or small value	Outlier	63%
Greek letter symbolizing the above	Mu	56%
The hypothesis to be rejected in a statistical test	Null hypothesis	53%
A parameter of association between two variables	Correlation	51%
Data distribution with two peaks	Bimodal	47%
Measure of the degree of asymmetry around the mean of a data distribution	Skewness	47%
Letter used to denote standard/normalized scores	z	47%
Unexplained variance in a regression equation	Error	37%
Band of variation around a parameter estimate	Confidence Interval	35%
Examines the size of the peak and the tails of a data distribution	Kurtosis	26%
Assumption about the relation among error terms in statistical analysis	Independence	21%