1.how do you find for the mean ?the variance? the standard deviation?
2.how will you interpret the result?
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1.how do you find for the mean ?the variance? the standard deviation?
2.how will you interpret the result?
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Answer:
The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.
Find the mean of the data set. Add all data values and divide by the sample size n.
Find the squared difference from the mean for each data value. Subtract the mean from each data value and square the result.
Find the sum of all the squared differences. ...
Calculate the variance.
The standard deviation formula may look confusing, but it will make sense after we break it down. ...
Step 1: Find the mean.
Step 2: For each data point, find the square of its distance to the mean.
Step 3: Sum the values from Step 2.
Step 4: Divide by the number of data points.
Step 5: Take the square root.
Show the most relevant information in graphs, figures, and tables.
Include data that may be in the form of pictures, artifacts, notes, and interviews.
Clarify unclear points.
Present results with a short discussion explaining them at the end.
Include the negative results.