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Duplicate of STATISTICS Review T1 Flashcards | StudBud
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Duplicate of STATISTICS Review T1
Duplicate of STATISTICS Review T1
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1
The law of the large numbers states that whith a bigger sample size
The population is closer to a normal distribution
The sample is expected to be closer to the parameter
The parameter is expected to be closer to the statistic
The statistic is expected to be closer to the parameter
2
The standard error of the mean is
The distance to the centre of the sampling distribution
The variance of the sample mean
The standard deviation of the sample mean
The variance of the population mean
3
If we increase the sample size (all else equal), the sampling distribution becomes
More concentrated
More biassed
Less normal
More disperse
4
The central limit theorem does not appy when
None is true
The sample is very small
The population is not normal
The sample is not normal
5
Statistical inference draws conclusions
None are correct
About sample statistics
About sample parameters
About population parameters
6
In a simple random sample (SRS)...
All are correct
Individuals of the sample have equal probability of being in the population
All individuals of the population are in the sample
Individuals of the population have equal probability of being in the sample
7
The centre of the sampling distribution of proportions (binary variable) is
The square root of the product of proportions over n
The population proportion p
P times (1-P)
The sample proportion phat
