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Coefficient of Variation and Standard Deviation are two measures of dispersion or spread among the data values. Let's say we have two different sets of data. Explain which of the two mentioned measures can more accurately find out which of these two data sets has more spread or variability in its data values. Please select 5 values for each of the two data sets and practically calculate the standard deviation and coefficient of variation for each data set to clarify your explanation.
Suppose a survey item asks someone if something is very important, somewhat important, not very important, or unimportant. This is an example of what level of measurement?
Summarize the relationship between sample size and confidence level.
Estimate a test statistic for null hypothesis H0: μ = 30 against two-sided alternative hypothesis H1 : μ ≠ 30, and by plotting this on its reference distribution.
The Federal Government of Australia uses the cash rate to control the inflation rate in Australia. Is there statistical evidence to support such a policy?
q1. describing data frequency distribution and graphic presentationsyou are the parts manager for a local dumb phone
q1. a random sample of 50 students at the university of florida revealed the mean number of hours slept last night was
The experimental medication of the placebo. Generate a 95% confidence interval for the difference in proportions of patients with hypertension between groups.
This sample group has errors with a standard deviation of 54.7ft. At the 5% level of significance, test that the new population has errors with a standard deviation equal to 43.7ft.
Health Outcome of Interest
Twelve students randomly selected from the entering class of college had the following SAT scores in math and English population mean=500, sigma=100
q1. statistics plays a vital role in almost every facet of human life. describe the functions of statistics. explain
the statistical abstract of the united states reports that the mean daily number of shares traded on the nyse in 2002
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