The second moment about mean of symmetrical distribution is 3.5.what must be the value of fourth moment about mean in order distribution will be lepto kurtic?
a) 36.75
b) 367.5
c) 3.675
d) 3675
The sum of 30 observation is 1500.its average will be?
a) 1500
b) 150
c) 15
d) 50
The normal distribution will be less spread out when?
a) Mean is small
b) median is small
c) mode is small
d) standard deviation is small
The tape in
magnetic tape were wound in……………now a days.
a) wheel like reels
b) cassettes
c) cartridges
d) both b & c
What is the range of data 24, 28, 20, 22?
a) 8
b) 4
c) 6
d) 2
Find the value of x when 6x-5=2x+9
a) 7/2
b) 14
c) 7
d)14/3
