Vocabulary
The shape of the graph of a normal distribution is this.
What is bell-shaped?
A normal distribution has a mean of 15 and a standard deviation of 3. The value that is 3 negative standard deviations away from the mean is this.
What is 6?
The percentage of data located within 1 standard deviation of the mean.
What is 68%
The mean of a standard normal distribution is this.
What is zero?
A normal distribution has a mean of 24 and a standard deviation of 6. What percent of values fall between 18 and 36?
81.5%
These percentages roughly represent the percent of the data values that fall within one, two, and three standard deviations from the mean of a normal distribution.
What is 68–95–99.7%?
The greek symbol used to represent standard deviation.
What is sigma (lower case) ?
A normal distribution has a mean of 8 and a standard deviation of 2. The value that is 2 positive standard deviations away from the mean is this.
What is 12?
The total area under the curve of a normal distribution is this.
What is one?
What symbols are used to represent sample mean and sample standard deviation?
A normal distribution has a mean of 100 and a standard deviation of 10. The percentage of data values that fall between the values of 70 and 90 is this.
What is 15.85?
Test scores have a mean of 78 with a standard deviation of 6. What percent of scores are below 70?
.0918 or 9.18%
The greek symbol used to represent the mean.
What is the greek letter Mu or μ?
A normal distribution has a mean of 10 and a standard deviation of 1. The percentage of data values that fall between the values of 8 and 12 is this.
What is 95%?
Test scores have a mean of 78 with a standard deviation of 6. What percent of scores are above 85?
.121 or 12.1%