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Related Flashcards
Related Topics
Cards In This Set
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Statistical enquiry
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Statistical investigation, a method of collecting information from individuals.
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Population or universe
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The inclusion of all the items in the field of statistical enquiry
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Sample
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Selection of few items as representatives of all the items
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In a village of 200 farms a study was conducted to find the cropping pattern. Out of the 50 farms surveyed , 50% grew only wheat. Identify the population and the sample here.
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Population =200Sample= 50
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Stratified / mixed random sampling
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In this method the universe is divided into homogenous and equal sample is drawn from each layer at random.
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Systematic or quasi random sampling
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This is used when a complete list of the population is available in order eg alphabetical order.
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Judgement sampling/purposive/deliberate sampling
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It is non random ampling which is done on the basis of convenience and judgement of the investigator.
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Quota sampling
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Interviewers are alloted definite quotas of the universe and they are required to interview a certain number from their quota.
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Convenience sampling
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In this method universe is selected purely on the basis of convenience.
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Types of random sampling
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1. Stratified2. Systematic 3. Cluster/multi stage sampling
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Types of non random sampling
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1. Judgement 2. Quota3. Convinience
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_________ samling method is unscientific and unreliabile
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Convenience
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________ errors are related to the collection of data.
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Non sampling
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