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Mean and median. Open the Mean and Median applet. Let's use this applet to explore these two measures of the center of a set of data. Click below the line to enter 5 observations on the left part of the line that are approximately equally spaced. The green arrow marks the location of the mean, and the red arrow marks the location of the median.
(a) Describe the location of the mean and the median.
(b) Drag the largest observation to the right and back again. How did the mean and median change? Summarize your findings.
The following correlation matrix is given by Allison and Ciechetti (1976) in a study of sleep in mammals:
Derive an expression for Note that this is not quite the moment-generating function, but it can be used in a similar way.
The aim of the assignment is to use methods in data exploration, presentation and statistical hypothesis testing to evaluate the implications of human activities for conservation management of IUCN Red-Listed grouper fish communities in a system o..
lester hollar is vice president for human resources for a large manufacturing company. in recent years he has noticed
What were the actual percentages of local high school students in each category? (Round answer to two decimal places) State an appropriate null hypothesis for this analysis. What is the value of the chi-square statistic
use the binomial function to answer the following questions there is no data set here suppose a shipment of 410
consider a situation where a die is rolled. which of the following explanations more closely describes the relative
In no less than five sentences, develop a research question that can be tested using a correlational analysis. You will need to identify your variables clearly. Also, make sure to explain why this topic is of interest to you.
Construct a 95 percent confidence interval for the population mean. Is it reasonable that the population mean is 28 weeks? Justify your answer.
A random sample of 12 observations is selected from a normal population. The sample mean was 407 and the sample standard deviation 6. Using the .01 significance level:
There are millions of teenagers in the United States whose experiences are being reflected in this story. How could the polltakers manage to ask so many teenagers these questions?
according to the census bureau 68 of americans owned their own homes in 2003. a local real estate office wants to see
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