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Import the data from data set corrExerciseB.
(a) Find the correlation between X and Y.
(b) Note that observations are put into one of four groups: A, B, C, and D. Find the mean of X and the mean of Y for each group.
(c) Create a scatter plot of the means (X A, YA), (XB, YB), ... and then find the correlation between the X¯ s, and the Y¯ s. Compare to (a). Ecological Correlation Correlations based on rates or groups are often higher than correlations based on individuals. This is a common problem in the social/behavior sciences where many data sets are based on summaries (e.g., census data for the 50 states: mean income levels, mean literacy rate, etc.).
If you are offered $20 to draw a red ball from a bag that contains six green balls, two blue balls, and two red balls, how much would you be willing to pay for a ticket to draw?
One class will be a thread class that runs an IO intensive operation. You can write to the system out a number of times (ie 1000) or do something like read and write a file.
Write the commands to remove all the space characters stored in the shell variable text. Be sure to assign the result back to text. First use tr to do it and then do the same thing with sed.
Prepare a short research paper (275-300 words) about video or computer games
Question 1: Write a method that computes the average of the values in an array of doubles. The header of the method is as follows:
Why would ambiguity be a problem? Why are mathematical notions, such as sets, a good foundation for specifications? What is the difference between preconditions, post-conditions, and invariants?
how to convert a string of binary into decimal and a decimal into binary using java
Based on your knowledge of IT security management, argue for or against assertions that Epworth system is in compliance with Health Insurance Portability and Accountability Act (HIPAA).
Extra credit if your program gives the nod to your favored party if the votes are tallied after 8 P.M. on the first Tuesday in November, but acts normally on all other dates.
What are the advantages and disadvantage of copying a virtual disk which results in a new disk with the guest OS already instated?
Identify and describe three common governmental/political actions that significantlyinfluence a firm's ability to sell goods and services in a global marketplace.
Using Visual Logic: Design the logic for a program that allows a user to entry 15 numbers, then displays each number and its difference from the numeric average of the numbers entered.
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