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Only numeric data (interval and ratio scales) can have a mean or median. And you're right, when data are skewed the median is always a better measure of central tendency. My question to everyone is, how can you tell when data are skewed and the median is a better measure? What clues do you look for?
In my local newspaper, the Salt Lake Tribune, they routinely publish the median home prices by zip code for the region. Why would they print the median and not the mean?
The same newspaper every Saturday publishes average (mean) gas prices for the region. Why would they publish mean gas price but median home price?
what method of probability assessment would most likely be used to assess the probability that a customer will return a
A study of 35 professors showed that the average time they spent creating test questions was 13.5 minutes per question. The standard deviation of the population is 3.8. Which of the following is the 99% confidence interval for the average number o..
Without performing any calculations, will the interval increase, decrease or stay the same? Which of the values in the formula will change?
Use a two proportion z-test to perform the required hypothesis test. State the conclusion.
when a truckload of apples arrives at a packing plant a random sample of 180 is selected and examined for bruises
the american college of cardiologists claims that the mean number of grams of fat in the popular m.i. burger sold at
To compare the effectiveness of two treatments 1 and 2 for a particular disease. Patients were separated in 2 treatment groups. A patient in group 1 received treatment 1 and patients in group 2 received treatment 2.
the operator of a large production plant would like to estimate the mean amount of time a worker takes to assemble a
six hundred draws will be made at random with replacement from the box 0 0 1 . the number of 1s among the draws will be
scores on a certain test are normally distributed and a researcher wishes to estimate the mean score achieved by all
Is the dealer's mean significantly greater than the national average of 30,000 miles for 2-year leased vehicles, using the 10 percent level of significance?
Explore how the average number of hours a student studies per night and the students GPA affect their ACT score.
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