BUSINESS ADMINISTRATION
BUSINESS ANALYTICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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100
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1
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It must be calculated
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It depends upon the mean and standard deviation
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Detailed explanation-1: -The standard normal distribution is a probability distribution, so the area under the curve between two points tells you the probability of variables taking on a range of values. The total area under the curve is 1 or 100%.
Detailed explanation-2: -The Normal (or Gaussian) distribution is the most common continuous probability distribution. The function gives the probability that an event will fall between any two real number limits as the curve approaches zero on either side of the mean. Area underneath the normal curve is always equal to 1.
Detailed explanation-3: -68% of the area is within one standard deviation (20) of the mean (100). The normal distributions shown in Figures 1 and 2 are specific examples of the general rule that 68% of the area of any normal distribution is within one standard deviation of the mean.
Detailed explanation-4: -The standard normal distribution has the following characteristics: The total area under the normal curve from-∞ to + ∞ is 1. The mean value is zero, i.e. y-axis is the axis of symmetry and therefore 50 % of the area is located between-∞ and 0 and other 50% area is located between 0 to +∞