The sample standard deviation formula uses _____ letter
arabic
The population standard deviation formula uses _____ letters.
greek
central tendency based on the point at which the distribution is in balance
balance scale
central tendency based on the concept of the sum of the absolute deviations
smallest absolute deviation
central tendency based on the sum of squared deviations
smallest squared deviation
the sum of the numbers divided by the number of numbers
arithmetic mean
the midpoint of a distribution
median
the most frequently occurring value in the dataset
mode
how spread out a distribution is
variability, spread, dispersion
the highest score minus the lowest score
range
the range of the middle 50% of the scores in a distribution
interquartile range
the average squared difference of the scores from the mean
variance
resistance to outliers
robustness
formula for degrees of freedom
N - 1
the square root of the variance
standard deviation
