The expected value is denoted as E(X) or μ. It is a fundamental concept in probability theory and statistics. It represents the long-term average or the "expected" value of a random variable. In simple terms, it tells you the expected value of the random experiment if you were to ...
To calculate the expected frequencies (E in the chi-squared formula) for each version of the landing page, we can multiply the row total for that cell by the column total and divide it by the total number of visitors. In this example, to find the expected value of conversion on version...
If multiple values in the TC(Send/Receive) column increase, check the event and log information on the NMS to determine whether the local switch causes the topology change, and check whether STP flapping occurs on the device connected to the problematic interface. # View statistics about TC/TCN...
For instance, it will take a lot more sample to find statistically significant differences between groups if you are asking, “What month do you think Christmas is in?” than if you are asking, “How many miles are there between the Earth and the moon?”. In the former, nearly everybody...
The law of large numbers applies to probability and statistics. It states that its mean gets closer to the average of the whole population as a sample size grows.
Example: You invested $1,000 in a dividend-paying stock and sold it a year later for $1,500. Over the year, you also earned $20 in dividends and paid $5 in trading commissions. Find your initial cost by adding how much you spent to buy the investment, including commissions. Here...
check out the article "Description of the Portqry.exe Command-Line Utility". There you will find brief descriptions of PortQry status reports and examples of commands to use to resolve problems. Keep in mind that you can also use the GUI version, which is much simpler and can be downloaded...
Using a sample size calculator or G*power, you can plug in your values to find out what’s required to run an adequately powered test. If you know three of the inputs, you can calculate the fourth. In this case, using G*Power, we’ve concluded that we need a sample size of 681 ...
Bureau of Labor Statistics as a good starting point. Down the line, you might also find internal data just as useful. You can turn to your own sales reports and see what trends took off right under your nose. This combination of primary and secondary research can help you create a ...
Statistics How To example: you could calculate the height of all your male classmates and find the mean height to be 5’9′ — this is a statistic. But then you could take that statistic and say “I think theaverageheight of an American male is 5’9′ “. How accurate your guess is...