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Fix-It Copiers advertises a mean time of 100 minutes for office calls with a standard deviation of 25 minutes What percentage of calls are completed?
Wiki User
∙ 12y ago
There is no information on how much time can be spent on a call.
Wiki User
∙ 12y ago
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Is standard deviation a percentage?
No. It's the number that will help you work out the percentage.
What is percentile deviation?
A standard deviation in statistics is the amount at which a large number of given values in a set might deviate from the average. A percentile deviation represents this deviation as a percentage of the range.
Find the formula for percentage of covariance?
100 x (standard deviation/mean)
What does the sample standard deviation best estimate?
The standard deviation of the population. the standard deviation of the population.
What is standard deviation of 155.45?
The standard deviation is 0.
Is standard deviation a percentage?
No. It's the number that will help you work out the percentage.
What percentage of the data falls outside 2 standard deviation of the mean?
4.55% falls outside the mean at 2 standard deviation
What is percentile deviation?
A standard deviation in statistics is the amount at which a large number of given values in a set might deviate from the average. A percentile deviation represents this deviation as a percentage of the range.
Find the formula for percentage of covariance?
100 x (standard deviation/mean)
The percentage that is one standard deviation away from mean?
For normally distributed data. One standard deviation (1σ)Percentage within this confidence interval68.2689492% (68.3% )Percentage outside this confidence interval31.7310508% (31.7% )Ratio outside this confidence interval1 / 3.1514871 (1 / 3.15)
What are the assumptions of standard deviation?
The standard deviation is the standard deviation! Its calculation requires no assumption.
Is the the coefficient of variation for a data set is the mean divided by the standard deviation expressed as a percentage?
no
What does the sample standard deviation best estimate?
The standard deviation of the population. the standard deviation of the population.
What is standard deviation of 155.45?
The standard deviation is 0.
What percentage of calls are completed between 100 and 120 minutes with a mean time of 100 minutes for office calls with a standard deviation of 25 minutes?
Mean = 100 Standard Deviation = 25 (120 -100) / 25 = 0.80 th z value of .80 from the table = .2881 P(100-120) = 28.81% What percentage of calls are completed in less than 60 minutes ? (60 - 100) / 25 = - 1.6 from the table the z value is .4452 (one side), then : .5000 - .4452 = .0548 P(60) = 5.48%
If quartile deviation is 24. find mean deviation and standard deviation?
Information is not sufficient to find mean deviation and standard deviation.
What is the relationship between standard deviation and variance?
Standard deviation is the square root of the variance.
