Quizziz 2

It is also called as the "Bell Curve". It provides a graphical representation of statistical values that are needed in describing the characteristics of population as well as in making decisions.

• Normal Distribution

• Discrete Probability Distribution

• Continuous Probability Distribution

• Histogram

The following are the characteristics of a normal curve EXCEPT:

• The distribution curve is a bell shaped

• The curve is symmetrical about its center

• The mean and standard deviation coincide at the center

• The curve is asymptotic to the base line

It is a normal probability distribution that has a mean of 0 and a standard deviation of 1.

• Normal Distribution

• Standard Normal Distribution

• Discrete Probability Distribution

• Continuous Probability Distribution

It is also called as "68-95-99.7 rule".

• Empirical Rule

• Addition Rule

• Multiplication Rule

• Mutually Exclusive Event

What is the area of a standard normal distribution with a given standard deviation of 2?

• 50%

• 65%

• 95%

• 99.7%

What will happen to a probability distribution if the mean score is low?

• The graph of a distribution is skewed to the left

• The graph of a distribution is skewed to the right

• The graph is normally distributed

• The graph of a distribution is narrow

In the Statistics examination, the mean grade is 78 and the standard deviation is 10. Find the z-score of a student who has a grade of 93.

• z = 1.2

• z = 1.3

• z = 1.4

• z = 1.5

Find the grade of a student if he obtained a z-score of 0.6 with the mean grade of 78 and a standard deviation of 10.

• 82

• 83

• 84

• 85

• 1.5

• 1.6

• 1.7

• 1.8

What can you describe about the graph of the distribution?

• The graph is skewed to the left

• The graph has an area of 65%

• The graph has 3 standard deviations

• The graph has an area of 95%