The shape of the graph of a normal distribution is this.
Bell Curve
100
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
12
100
What is standard deviation?
The distance of a set of data points from the mean
200
This measure of central tendency of a normal distribution represents the highest point on the curve
The Mean
200
A normal distribution has a mean of 15 and a standard deviation of 3. The value that is 2 negative standard deviations away from the mean is this
9
200
What is the mean and standard deviation of the following set of scores:
8, 8, 8, 8, 8, 8
mean = 8
s = 0
300
These percentages roughly represent the percent of the data values that fall within one and two standard deviations from the mean of a normal distribution.
68% 95%
300
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
95%
300
Set A: 3, 4, 5, 6, 2, 3, 4
Set B: 3, 6, 8, 9, 1, 9, 1
Which data set would have the smaller standard deviation? How can you tell? (no calculations needed)
Set A because the numbers are closer together
400
Another name for the mean.
Average
400
A normal distribution has a mean of 24 and a standard deviation of 6 of the values of this distribution fall between what data values?
18 and 30
400
What is the mean and standard deviation for the following set of numbers?
4, 8, 6, 6, 6
Mean = 6
Standard Deviation = 1.3
500
The total area under the curve of a normal distribution is this.
One or 100%
500
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 80 and 100 is this
47.5 %
500
What is the mean and standard deviation for the following set of numbers?
10 10, 10, 20, 50