Shared Flashcard Set

Details

Introduction to Statistics and Reasoning
Measures of Central Tendency for Ungrouped Data
12
Mathematics
Undergraduate 2
06/05/2011

Additional Mathematics Flashcards

 


 

Cards

Term
mean
Definition
most frequently used measure of central tendency
Term
median
Definition
value of the middle term in a data set that has been ranked in increasing order
Term
mode
Definition
the value that occurs with the highest frequency in a data set
Term
bimodal
Definition
a data set with the same (highest) frequency has two weeks
Term
symmetric histogram
Definition
the values of the mean, median, and mode are identical, and they lie at the center of distribution
Term
histogram curve skewed to the right
Definition
the value of the mean is the largest, that of the mode is the smallest, and the value of the median lies between these two
Term
histogram curve skewed to the left
Definition
the value of the mean is the smallest and that of the mode is the largest, with the value of the median lying between these two
Term
range
Definition
the simplest measure of dispersion to calculate
Term
standard deviation
Definition
the most-used measure of dispersion
Term
variance
Definition
standard deviation is obtained by taking the positive square root
Term
Chebyshev's Law
Definition
for any number k greater than 1, at least (1-1/k2) of the data values lie within k standard deviations of the mean
Term
Empirical Rule
Definition
applies only to a specific type of distribution called a bell-shaped distribution
Supporting users have an ad free experience!