Question

A regression line is a straight line which:​

Answer 1

Step-by-step explanation:

Definition. A regression line is a straight line that de- scribes how a response variable y changes as an explanatory variable x changes. We often use a regression line to predict the value of y for a given value of x.

Answer 2

Ques. A regression line is a straight line which:

a) is located as close as possible to all the points of a scatter chart.

b) is defined by an equation having 2 parameters: the slope and the intercept.

c) provides an approximate relationship between the values of two

parameters.

d) is parallel to one of the coordinate axes​.

Answer:

The correct answer is option b) is defined by an equation having $2$ parameters: the slope and the intercept.

Step-by-step explanation:

• A regression line is a curve that illustrates the behaviour of a set of data. In other words, it shows the strongest trend in the data. Regression lines are used in forecasting approaches. Its objective is to explain the relationship between the dependent variable (y variable) and one or more independent factors (x variable).
• The equation obtained from the regression line acts as an analyst who may predict future behaviour of the dependent variables by entering alternative values for the independent variables.
• Both the financial and commercial spheres use regression lines. A number of financial experts utilise linear regressions to forecast stock prices, commodity prices, and carry out valuations on a variety of securities.

#SPJ3