Statistics and Data Analysis - Statistics

General Stats

Answer Stats

Hint	Answer	% Correct
The average value in a data set	Mean	97%
The value of the 50th percentile in a data set	Median	85%
The most frequent value in a data set	Mode	81%
Measure of variation of a set of data values	Standard deviation	79%
A subset of data taken from a population	Sample	72%
An unusually large or small value	Outlier	69%
Indicator of statistical significance of a test	p-value	67%
Each 25% of a data distribution	Quartile	65%
Data distribution that is bell-shaped	Normal	64%
Greek letter symbolizing the above	Sigma	64%
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	49%
Letter used to denote standard/normalized scores	z	47%
Measure of the degree of asymmetry around the mean of a data distribution	Skewness	46%
Data distribution with two peaks	Bimodal	42%
Unexplained variance in a regression equation	Error	40%
Band of variation around a parameter estimate	Confidence Interval	29%
Examines the size of the peak and the tails of a data distribution	Kurtosis	24%
Assumption about the relation among error terms in statistical analysis	Independence	19%

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