SOLUTION: A sample of values has a mean of 500.0 and a standard deviation of 50.0. Use the Range Rule of Thumb to find estimates for the minimum and maximum “usual” values.
Algebra ->
Probability-and-statistics
-> SOLUTION: A sample of values has a mean of 500.0 and a standard deviation of 50.0. Use the Range Rule of Thumb to find estimates for the minimum and maximum “usual” values.
Log On
Question 872991: A sample of values has a mean of 500.0 and a standard deviation of 50.0. Use the Range Rule of Thumb to find estimates for the minimum and maximum “usual” values.
You can put this solution on YOUR website! (400,600) 2Sd either side of the mean
Below: z = 0, z = ± 1, z= ±2 , z= ±3 are plotted.
Note: z = 0 (represents x-value of the mean)
50% of the area under the curve is to the left and %50 to the right
For the normal distribution:
one standard deviation from the mean accounts for about 68% of the set
two standard deviations from the mean account for about 95%
and three standard deviations from the mean account for about 99.7%.
