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Question: Roll your own regression. Choose two quantitative variables that you think have a roughly straight-line relationship. Gather data on these variables and do a statistical analysis: make a scatterplot, find the correlation, find the regression line (use a statistical calculator or software), and draw the line on your plot. Then write a report on your work. Some examples of suitable pairs of variables are the following:
(a) The height and arm span of a group of people.
(b) The height and walking stride length of a group of people.
(c) The price per ounce and bottle size in ounces for several brands of shampoo and several bottle sizes for each brand.
A company wants to give one of its raw material suppliers a measure of how well a process is running with a new raw material. On a scale of 1 10 they rate a number of key areas of the process and average those ratings. This average is then given t..
If the expected frequency in a cell happens to be less than 5.0, what should be done in order to carry out the analysis?
the lead time to receive order from brightall is 10 days. pantena corp. operates 250 days a year. as such pantena corp
A geneticist conducts her survey and calculates hat p = 0.512. Which of the following is the most correct interpretation of this statistic? a) There is a 51.2% chance that a randomly selected gamete cell will have the male chromosome.
$600 (1 chance in 4800); $200 (1 chance in 2500). Find the expected value of the amount won for one entry if the cost of entering is 52 cents.
in a tire factor the quality control inspector examines a randomly chosen sample of 16 tires. when more than one
Would it be reasonable to conclude that the population distribution is Poisson with a mean of 2.0?
If 200 workers are randomly chosen, what is the probability that at least 120 of them believe that technology has lengthened their workday.
the goal of any supervised learning study is to be able to predict the response very
Convincing evidence to support the claim that fewer than half of adult Americans can name at least one justice currently serving on the Supreme Court.
Compare the two distributions graphically, and then use the two-sample t test to compare the average SATM scores of males and females.
a candidate for one of ohios two u.s. senate seats wishes to compare her support among registered voters in the
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