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Biostats

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
What is the interquartile range   The difference in values between the 25th and 75th percentiles  
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variance   sum of the squared deviations from the mean divided by the number of observations minus 1  
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Standard deviation   Square root of variance  
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1 standard deviation above and below mean   represents 68% of observations  
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2 Standard deviation above and below mean   represents 95.4 observations  
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Z values   useful for determining how extreme (how many standard deviations above or below the mean) and observed result is  
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deductive reasoning   proceeds general to specific  
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Inductive reasoning   proceeds specific to general  
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T_Test   Determines whether observed differences between two sets of data are statistically significant (rather that caused by chance alone)  
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