Inductive reasoning is a method of reasoning in which a general principle is derived from a body of observations. It consists of making broad generalizations based on specific observations. Inductive reasoning is distinct from deductive reasoning, where the conclusion of a deductive argument is certain given the premises are correct; in contrast, the truth of the conclusion of an inductive argument is probable, based upon the evidence given.
The types of inductive reasoning include generalization, prediction, statistical syllogism, argument from analogy, and causal inference.
A generalization (more accurately, an inductive generalization) proceeds from a premise about a sample to a conclusion about the population. The observation obtained from this sample is projected onto the broader population.
The proportion Q of the sample has attribute A.
Therefore, the proportion Q of the population has attribute A.
For example, say there are 20 balls—either black or white—in an urn. To estimate their respective numbers, you draw a sample of four balls and find that three are black and one is white. An inductive generalization would be that there are 15 black and five white balls in the urn.
How much the premises support the conclusion depends upon (1) the number in the sample group, (2) the number in the population, and (3) the degree to which the sample represents the population (which may be achieved by taking a random sample). The greater the sample size relative to the population and the more closely the sample represents the population, the stronger the generalization is. The hasty generalization and the biased sample are generalization fallacies.
A statistical generalization is a type of inductive argument in which a conclusion about a population is inferred using a statistically-representative sample. For example:
Of a sizeable random sample of voters surveyed, 66% support Measure Z.
Therefore, approximately 66% of voters support Measure Z.
The measure is highly reliable within a well-defined margin of error provided the sample is large and random.
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First formulated by David Hume, the problem of induction questions our reasons for believing that the future will resemble the past, or more broadly it questions predictions about unobserved things based on previous observations. This inference from the observed to the unobserved is known as "inductive inferences", and Hume, while acknowledging that everyone does and must make such inferences, argued that there is no non-circular way to justify them, thereby undermining one of the Enlightenment pillars of rationality.
An explanation is a set of statements usually constructed to describe a set of facts which clarifies the causes, context, and consequences of those facts. It may establish rules or laws, and may clarify the existing rules or laws in relation to any objects or phenomena examined. Explanation, in philosophy, is a set of statements that makes intelligible the existence or occurrence of an object, event, or state of affairs.
Critical thinking is the analysis of available facts, evidence, observations, and arguments in order to form a judgement by the application of rational, skeptical, and unbiased analyses and evaluation. The application of critical thinking includes self-directed, self-disciplined, self-monitored, and self-corrective habits of the mind, thus a critical thinker is a person who practices the skills of critical thinking or has been trained and educated in its disciplines. Richard W.
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