Advertisements
Advertisements
प्रश्न
Define Regression.
Advertisements
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”.
APPEARS IN
संबंधित प्रश्न
Choose the correct alternative.
In the regression equation of Y on X
Choose the correct alternative.
‘r’ is __________.
Choose the correct alternative.
bXY .bYX is _________.
Choose the correct alternative.
bYX > 1 then bXY is _______
Choose the correct alternative.
Corr (x, y) = _____
Choose the correct alternative.
Regression equation of Y on X is ____
State whether the following statement is True or False:
The variable used for predicting the response is called the independent variable
Dependent variables are also known as ______
The purpose of simple linear regression analysis is to:
In the regression equation Y = β0 +β1 X, the Y is called:
The term Uiin regression equation is a ______.
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 |
Regression mainly occurs when a person is experiencing______.
