Normal Distribution and Curve Fitting Quiz

Which of the following is a characteristic of a normal distribution?

• Skewed right

• Bell-shaped curve

• Uniform

• Bimodal

The total area under a normal curve is:

• 0

• 0.5

• 1

• Infinity

In a normal distribution, the mean, median, and mode are:

• All different

• All equal

• Mean < Median

• Cannot say

Which parameter(s) define a normal distribution?

• Mean and range

• Mean and variance

• Median and mode

• Mode and standard deviation

A normal distribution is:

• Discrete

• Continuous

• Uniform

• Poisson

The point of inflection on a normal curve occurs at:

• μ ± σ

• μ ± 2σ

• μ ± 3σ

• μ

What is the shape of the curve in a normal distribution?

• U-shaped

• Linear

• Bell-shaped

• Exponential

In a standard normal distribution, mean is:

• 0

• 1

• 2

• 0.5

In a standard normal distribution, the standard deviation is:

• 0

• 1

• 2

• 0.5

The empirical rule states that about 68% of data lies within:

• 1σ

• 2σ

• 3σ

• 4σ