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I did a study correlating net profit per location with expenditures on an in-house promotion, and got a correlation of about .15, and that was received very well. If you are following up your correlation analysis with, say, factor analysis of cluster analysis, then a .6 or better correlation makes these subsequent analyses more valid.
In relative frequency histogram for a large set of GPAs, the mean and the standard deviation are 2.10 and 0.21 respectively. What proportion of GPAs falls within 1.68 and 2.52?
What are the possible combinations of coins that Sanjay could have received in change?
At a large commercial bakery, one of the measures familiar with evaluate employees is the number of broken cookies per 1000 produced. The quality control department wants to determine if there is a relationship between years of experience and bro..
A dataset has 1000 records and 50 variables with 5% of the values missing, spread randomly throughout the records and variables. An analysis decides to remove records that have missing values. About how many records would you expect would be remov..
A project manager at COMSOFT corporation has collected statistics on the organization's software development process. He has the size of each project in number of lines of code for the past 20 projects and the number of lines of code in error disc..
Determine marginal probability distributions of X and Y . Compute conditional probability P ( Y = 2 | X = 1)
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
In order not to violate the requirements necessary to use the chi-square distribution, each expected frequency in a goodness of fit test must be:
Find a 99% confidence interval estimate of the proportion of people who say that they voted.
A farmer in Iowa owns 45 acres of land. He is going to plant each acre with wheat or corn. Each acre planted with wheat yields $200 profit, requires 3 workers, and requires 2 tons of fertilizer; each with corn yields $300 profit, requires 2 worker..
Differences in Descriptive and Inferential Statistics and analyze the differences between descriptive and inferential statistics.
Does this mean immigrants tend to earn more than other people? Or does it mean immigrants improve a state's economy? If not, what could explain the correlation?
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