Examlex
Do you agree that the frontier was for Americans as much a symbol and a state of mind as it was an actual place?
Did that symbol weaken with the closing of the frontier in 1890, or did it actually gain strength once the actual frontier was gone?
Test-statistic
A test statistic is a calculated value from sample data that is used in statistical hypothesis testing to determine whether to reject the null hypothesis.
Degrees of Freedom
Degrees of freedom refer to the number of independent values or quantities which can be assigned to a statistical distribution or in the calculation of statistics, minus the number of independent constraints applied to the data set.
Margin of Error
A measure indicating the range within which the true value lies, with a given level of confidence.
Gas Stations
Facilities that sell fuel and often other automotive services or goods to motorists and vehicles.
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