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प्रश्न
Define Regression.
उत्तर
The term ‘Regression’ was first coined and used in 1877 by Francis Galton while studying the relationship between the height of fathers and sons. The average height of children born of parents of a given height tended to move or “regress” toward the average height in the population as a whole. Gabon’s law of universal regression was confirmed by his friend Karl Pearson, who collected more than a thousand records of heights of members of family groups. The literal meaning of the word “regression” is “Stepping back towards the average”.
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संबंधित प्रश्न
Choose the correct alternative:
Regression analysis is the theory of
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‘r’ is __________.
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bXY .bYX is _________.
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bYX > 1 then bXY is _______
|bxy + byx | ≥ _______
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Corr `("x - a"/"c", "y - b"/"d")` = - corr (x, y) if,
State whether the following statement is True or False:
Regression analysis is used for measuring the degree of the relationship between the variables
State whether the following statement is True or False:
The variable used for predicting the response is called the independent variable
The term regression was used by:
The purpose of simple linear regression analysis is to:
A process by which we estimate the value of dependent variable on the basis of one or more independent variables is called:
In the regression equation Y = β0 +β1 X, the X is called:
If Y = 2 - 0.2X, then the value of the Y-intercept is equal to ______.
Find the regression equation Y on X and X on Y for the following data:
| Y | 45 | 48 | 50 | 55 | 65 | 70 | 75 | 72 | 80 | 85 |
| X | 25 | 30 | 35 | 30 | 40 | 50 | 45 | 55 | 60 | 65 |
