Statistical Terms
The author of this report has been asked to answer three broad questions about certain statistical terms and concepts. The first one of those will be standard deviation. The second of the three will be hypothesis testing. The final question will center on standard error and what it means. While statistics may be daunting and intimidating, the concepts and terms used in statistics parlance are not hard to understand or comprehend so long as they are explained and quantified carefully.
The first overall question is what precisely standard deviation happens to be. To put it simply, standard deviation is how dispersed a set of numbers are. For example, the numbers 1, 2 and 3 are very close together so the standard deviation value would be rather small. However, the numbers 1, 1000 and 1,000,000 would have a very large standard deviation because the overall range of the numbers is much wider. The formula for standard deviation is the square root of the variance. The variance is the average of the squared differences from the mean (Math Is Fun, 2015). The author is then ask to consider a sample where the number of figures in the sample is twenty, the mean is...
Null Hypothesis and an Alternate Hypothesis Hypothesizing in business assists leadership in deciding which avenue to take for the overall health of the organization. This is done by allowing the business managers to make decisions after having full research. Business leaders have had to employ hypothesizing to facilitate the implementation of right decisions in their lines of duty. This is an important process because organizations are made or destroyed by the
SE = 2.1820749866 Hypothesis Testing Answer each question completely to recieve full credit There is a new drug that is used to treat leukemia. The following data represents the remission time in weeks for a random sample of 21 patients using the drug. State the Null Hypothesis Let XA represent the mean remission time of the new drug and XB the mean remission time of the previous drug, then the null hypothesis states that
global warming. One of the arguments in favor of this being an issue is that temperatures have increased over time, since humans began burning fossil fuels. There are a number of ways to look at the issue, but one thing that has not received much consideration is that baseline data, which is taken from urban areas, may be skewed by other factors besides anthropogenic global warming. One factor that
-Provide an example of a hypothesis where a one-tailed hypothesis test would be used. An example of a one-tailed test is testing the claim that the mean score of the gender male is higher than the scores of the gender female in public institutions. -Provide an example of a hypothesis where a two-tailed hypothesis test would be used. An example in this case is testing the claim that the mean scores between the gender male
Transient Vibrations and Shock Loads in Spacecraft Components Increasing performance, as well as the goals of reducing costs, have been the major factors affecting the design of the present and future spacecraft launching system. However, the level of vibration is currently affecting the design process, and launch phase, which may lead to a satellite failure. While it is possible to design the spacecraft to withstand the loads, it is still
WidgeCorp A null hypothesis is what is being tested. Essentially, when one runs a statistical test, the objective of the test is to prove the null hypothesis. If the null hypothesis is not proved, then the alternative hypothesis is proved. A good example of this would be trying to test drinking water from a well to prove that it is safe. Let's say that the cutoff for safety is 100 parts
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