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Least squares method of fitting a line ( the line of best fit or the regression line) through the scatter diagram is a method which minimizes the sum of squared vertical deviations from the fitted lines. In other words the line to be fitted will pass through the points of the scatter diagram in such a fashion that the sum of the squares of the vertical deviations of these points from the line will be a minimum
Skewness It is the comparison of the mean, median and mode can reveal information about the characteristics of skewness. Definition The distribution of the data is ske
Tim Snyder and Jay Wise have decided to form a partnership. They have agreed that Snyder is to invest 30000 and Wise is to invest 40000. Snyder is to devote full time to the busi
summarize chapter 2 in three pages, material costing and control
What is a hypothesis test? Why do we need to use them to make decisions about relating sample results to the population; why can’t we just make our decisions by the sample value?
Quartiles and Percentiles Percentile can be explained as : a measure this tells us what is the percent of the total frequency scored at or below the measure. Quartiles
How do I calculate 50p3?
Ten students are given coaching for environmental statistics. The score obtained in tests 1 and 5 are given below: Sl No of student 1 2 3 4 5 6 7 8 9 10 Marks in 1st test 50 52 53
After analyzing the data the researcher has to test ten hypotheses various tests such as chi square test t test have been developed by statisticians for the purpose. The hypotheses
1. This question has multiple parts. For a distribution of scores with = 82 and standard deviation = 2.5, find the following: (Don't forget to sketch the normal curve to help
Stability Criterion A survey of periodic table carefully reveals that those elements in which N / Z = 1 or 1.6 are stable. Amongst these, the elements having even N and even Z ar
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