Titlebook: Essential Statistics; D. G. Rees Book 1989Latest edition Springer Science+Business Media Dordrecht 1989 statistics

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书目名称Essential Statistics被引频次学科排名




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crescendo

Some statistical notation,tion will be made in later chapters within the context of particular statistical methods. Worksheet 2 which follows this chapter is intended to help you to use your calculator and become familiar with the notation.

pessimism

后天习得

Probability,having been drawn from a larger ‘parent’ population. Conclusions from sample data about the populations (which is a branch of statistics called’ statistical inference’ see Chapter 8 onwards) must necessarily be made with some uncertainty since the sample cannot contain all the information in the pop

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Hypothesis testing, previous chapter we discussed one branch of inference, namely estimation, particularly confidence interval estimation. Another important branch of inference is hypothesis testing which is the subject of much of the remainder of this book. See Fig. 10.1.

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Non-parametric hypothesis tests,re less powerful than the corresponding ‘parametric’ tests, that is we are less likely to reject the null hypothesis and hence accept the alternative hypothesis, when the alternative hypothesis is correct. We can therefore conclude that parametric tests are generally preferred if their assumptions a

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VAN

Regression analysis,ables (provided by a correlation coefficient) as in predicting the value of one variable from the value of the other variable. For example, if trainee salesmen take a test at the end of their training period, can the test score be used to predict the first-year sales, and how accurate is the predict

Flinch

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What is statistics?,th. However, in the title of this chapter the singular noun’ statistics’ is used to mean the science of collecting and analysing data where the plural noun ‘data’ means numerical or non-numerical facts or information.