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Probability and statistics

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Questions 8

Answers

1
Both probability and statistics attempt to furnish us with knowledge of an uncertain world.
True
False
2
What are the two disciplines developed by mathematics to deal with uncertainty and variation?
Probability and statistics
Numerical analysis and computer algebra
Probability and geometry
Fluid mechanics and statistics
3
Insurance companies have historical data that show the probability that a person will die.
True
False
4
Which is not a common type of misuse of statistics?
Fautly sampling
Selection bias
Selection Bias
Creating graphs whose scales are clear and not foreshortened to misinform
5
One common misuse is drawing false conclusions from correlations. Which one is not a characteristic of a correlation?
It is a relationship in data sets.
It can be positive, negative, neutral or neglible.
It suggests an inference of causal connection.
It is a special case of faulty sampling.
6
What is not true about descriptive statistics?
It is used to provide random and trivial information about a population.
It deals with the analysis and interpretation of data from populations.
It draws out important and interesting features and shows up patterns.
It measures frequency, measures of central tendency and size of variation.
7
Mathematics is about certainty and exactness, whereas statistics deals with inexact.
True
False
8
What is not true about inferential statistics?
It is based on probability theory.
It describes and makes inferences about the population as a whole.
It makes possible to analyze the entire population.
It uses random samples of data from a population.