Mean ± 2 S.D. covers .............. % area of normal curve.

Related MCQs

• The area under the standard normal curve beyond the line z = ±1.96 is ...............................
• An approximate relation between MD about mean and SD of a normal distribution is ............................
• Mean Deviation (M.D) for normal distribution is equal to ......................
• A normal distribution requires two parameters, namely the mean and ..............
• ...........................distribution gives a normal bell shaped curve.
• The normal curve is .................................
• For a normal curve , the QD, MD, and SD are in the ratio of ..............................
• Theoretically, the range of normal curve is ................................................
• Normal distribution was first discovered by ................................... in 1733 as limiting form of binomial distribution.
• Normal distribution is a........................... probability distribution.