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
Explanation: To find the average of a set of observations, we divide the sum of the observations by the total number of observations.
Given that the sum of 30 observations is 1500, we can find the average by dividing 1500 by 30:
Average = Sum / Number of observations Average = 1500 / 30 Average = 50
Therefore, the correct answer is:
d) 50
The average of the 30 observations will be 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
Explanation: cartridges and cassettes offered more protection for the tape inside.
What is the range of data 24, 28, 20, 22?
a) 8
b) 4
c) 6
d) 2
Explanation: To find the range of a set of data, subtract the smallest value from the largest value.
Given data: 24, 28, 20, 22
The smallest value is 20, and the largest value is 28.
Range = Largest value - Smallest value = 28 - 20 = 8
Therefore, the range of the data is: a) 8
Find the value of x when 6x-5=2x+9
a) 7/2
b) 14
c) 7
d)14/3
