The time-series component that implies a long-term upward or downward pattern is called the trend ...

The time-series component that implies a long-term upward or downward pattern is called the trend component.
 
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Q. 2

In simple linear regression analysis, the regression model forms a straight line in two-dimensional space through the x,y data points, while a multiple regression model forms a plane through multidimensional space.
 
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Q. 3

In a university statistics course a correlation of -0.8 was found between numbers of classes missed and course grade. This means that the fewer classes students missed, the higher the grade.
 
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Q. 4

In a multiple regression model, the regression coefficients are calculated such that the quantity, is minimized.
 
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Q. 5

In order for a time series to exhibit a seasonal component, the data must be measured in periods as short or shorter than quarterly.
 
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Q. 6

Given a sample of size n = 15 and a sample correlation of r = 0.7, the value of the test statistic for conducting a hypothesis test of the correlation is t = 3.53.
 
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