The nth positive root of the product of the x1, x2, x3,…..xn observations is called………..
a)Mode
b) Mean
c)Geometric mean
d)median
Sum of deviation of the variable x from its mean is always……….
a) zero
b)one
c)same
d)negative
The measures that are used to determine the degree or extent of variation in a data set are called measures of……….
a)Dispersion
b)central tendency
c)average
d) quartile
The extent of variation between two extreme observations of a data set is measured by:
a)average
b)range
c)quartiles
d)mode
The mean of the squared deviations of xi (i=1,2,3……..,n) observations from their arithmetic mean is called………
a) variance
b)range
c)standard deviation
d)mode
The size of class interval (6-10) is………..
a) 4
b) 5
c) 8
d)10
