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What number of observations would be required in a time study in order to obtain a 95 percent confidence that the average time observed was no more than 0.6 minutes from the true mean?
Wiki User
∙ 14y ago
What number of observations would be required in a time study in order to obtain a 95 percent confidence that the average time observed was no more than 0.6 minutes from the true mean, assuming a standard deviation of cycle time of 1.8 minutes?
Wiki User
∙ 14y ago
Gabe Cabigting
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What measure gives the average value?
Sum of observations/Number of observations.
What is the average in math?
Average, if unqualified, refers to the arithmetic average which is the sum of the observations divided by the number of observations. Average- a number that typifies a set of numbers of which it is a function.
Why is it important to carry out a large number of observations in experiments?
You are required to carry out large number of observations in experiments because during experiments errors are very common. So to minimize the error, you take a mean (average) of large number of observations so that you can get a more precise value.
What are the advantages of weighted average?
More importance can be attached to observations which are either of greater importance, accuracy (lesser variance).
Formula of MEDIAN for ungrouped data?
If there are n observations, then, If n is odd then let m = (n+1)/2. The median is the mth value in the ordered set of observations. If n is even then let m = n/2. The median is the average of the mth and (m+1)th values in the ordered set of observations.
What measure gives the average value?
Sum of observations/Number of observations.
What is the average in math?
Average, if unqualified, refers to the arithmetic average which is the sum of the observations divided by the number of observations. Average- a number that typifies a set of numbers of which it is a function.
How do you work the mean average?
The "mean" is the "average". In statistics, it is the commonly used terminology. The mean value of a set of numeric observations is the sum of that set of observations divided by the number of observations.
How do you determine how many observations to average in a moving average model?
The period value determines how many observations to average in a moving average model. Moving average is not a real piece of data but a comparison for forecast and valuation.
In statistics what is mean?
The "mean" in statistics is the average of all the observations in a data set; or, mean = (sum of all observations) / (number of observations) Example: I weigh 5 rocks and get the following results: 1kg 2kg 3kg 4kg 5kg The average weight of these rocks is: (1+2+3+4+5)/5 = 3 kg
Why is it important to carry out a large number of observations in experiments?
You are required to carry out large number of observations in experiments because during experiments errors are very common. So to minimize the error, you take a mean (average) of large number of observations so that you can get a more precise value.
How to estimate the average on a line graph?
You cannot, because you will not know whether the observations are evenly spaced.
How does a outlier graph effect the average of a number?
The average - arithmetic mean - is calculated as the sum of the values divided by the number of values. Compared with other observations, the outlier makes an abnormally small or large contribution to the sum, while making the same contribution to the count of observations.
Are half of the observations in an arithmetic mean always larger than the mean?
no -- are you thinking of the median? the mean is just the average for example, in this set 1 4 4 4 5 6 the mean is 4, but one observation is smaller than the average and two observations are larger.
What are the steps for mean median and mode?
Mean = sum of observations/number of observations Median: Order the observations. Of there are an odd number of observations, the median is the middle one. So if there are n observations (where n is odd) then the median is the (n+1)/2 th observation. If n is even, the median is the average of the n/2 th observation and the (n/2 +1) th. Mode: Group the observations. The mode is the value or values that appear the most often. There may be no mode, a single mode or lots of them.
What is the average of 46?
At least two numbers are required to determine an average.
What is the average of 74?
At least two numbers are required to determine an average.
