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Question:
Using the ruspini dataset provided with the cluster package in R, perform a k-means analysis. Document the findings and justify the choice of k. Hint: use data(ruspini) to load the dataset into the R workspace.
Construct and show a scatterplot of the data. Does it show a positive correlation, negative correlation or no correlation?Find the value of the linear correlation coefficient r.Based on the critical value and the correlation coefficient, is there s..
Explain the purpose of simple linear regression and scatter diagrams. Please provide a simple linear regression model and define each variable used.
Validity can be defined as an evaluative judgment based on a variety of considerations, such as the structure of the measurement operations.
A survey of people in Iowa showed that 40 out of 400 prefer watching TV comedy shows. Another survey in Colorado showed that 90 out of 600 prefer watching TV comedy shows. At a 1% significance level, would it seem that the true proportions of p..
In a poll, 51% of he people polled answered yes to the question "are you in favor of the death penalty of a person convicted of murder?" the margin of error in he pole waa 2% and the estimate was made with 95% confidence. At least how many people wer..
1) A random sample of customer order totals with an average of $78.25 and a population standard deviation of $22.50. Calculate a 90% confidence interval fro the mean, given a sample size of 75 orders
1. The J.O. Supplies Company buys calculators from a Korean supplier. The probability of a defective calculator is 20%. If 14 calculators are selected at random, what is the probability that less than 3 of the calculators will be defective?
Find the area under the normal distribution curve between z = -0.05 and z = 2.85.
Conduct an impact evaluation using appropriate methods in R or Stata - impact of educational quality improvement programme in Tanzania on pupil learning.
The activities that are necessary to build one of these experimental weed-harvesting machines are listed in table. Construct a network for these activities.
Define nonoverlapping classes for a frequency distribution. Tally the number of values in each class and develop a frequency distribution. Find the number of classes needed to construct a histogram.
STAT 6003: Statistics for Financial Decisions Assessment. Apply judgement to select appropriate methods of data analysis drawing on knowledge of regression analysis, probability, probability distributions and sampling distributions
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