An event occuring at time t+k is said to lag behind event occurring at time t. Extent of lag is k.
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The answer depends on what the test statistic is: a t-statistic, z-score, chi square of something else.
The F statistic is statistic which may be used to test whether a regression accounts for a statistically significant proportion of the observed variation in the dependent variable.
A parameter is a numerical measurement of a population; a statistic is a numerical measurement of a sample.
No. A statistic is a number describing a characteristic of a sample.
This is used in statistic to know whether to accept or reject a null hypothesis or alternative hypothesis