Characteristics
A normal distribution has a mean of 8 and a standard deviation of 2. What is the value that is 2 positive standard deviations away from the mean?
What is 12?
What is 5-15
67 72 88 73 99 85 81 63 94 68
What is the range of the data?
What is 36
The percentage of data that falls within 2 standard deviations of the mean.
75%
A normal distribution has a mean of 15 and a standard deviation of 3. What value that is 3 negative standard deviations away from the mean?
What is 6?
When is an example of when the mean is not the best indication of a typical data entry?
What is when there are outliers.
What country is Chebyshev from?
What is Russia
A normal distribution has a mean of 10 and a standard deviation of 1. What percentage of data values fall between the values of 8 and 12?
What is 95%?
What button do you push on your graphing calculator to find the stat plots?
What is 2nd y=?
67 72 88 73 99 85 81 87 63 94 68 87
What is the median?
What is 83
The percentage of data that falls within 3 standard deviations of the mean.
What is 88.9%
A normal distribution has a mean of 24 and a standard deviation of 6. 68% of the values of this distribution fall between what two data values?
What is 18 and 30?
What are the symbols for:
Sample mean?
Sample Standard Deviation?
Population mean?
What x bar, Sx, u?
67 72 88 73 99 85 81 87 63 94 68
What is the mode?
What is there isn't one
The mean score on a test is 82, with a standard deviation of 3. Using k=4, what can you say about the data?
At least 93.75% of the data lies between 70 and 94
What town does Mrs. Beigel live in?
What is Dunstable?
The mean gestational length of a samle of 208 horses is 343.7 days with a SD of 10.4 days. The data is bell shaped. How many gestational lengths are between 333.3 and 354.1 days?
Tell me the difference between skewed left and skewed right.
Skewed left means the tail of the graph is longer on the left. Skewed right means the tail is longer on the right.
These are the grades of all students in a stats class:
67 72 88 73 99 85 81 87 63 94 68 87
What is the standard deviation?
What is 11.5
Then mean score on a test is 82, with a standard deviation of 3. If there are 20 students in the class, how many students scores within 2 standard deviations from the mean?