Which test is used to check the hypothesis that ρ = 0?

• A) f-test
• B) chi-test
• C) z-test
• D) t-test

The point where regression line cuts the y-axis is called:

• A) Centroid
• B) Slop
• C) Origin
• D) Intercept

$${\text{What is the value of y - intercept in the regression line }}Y = - 2 - 3X{\kern 1pt} {\text{?}}$$

• A) $$- 3$$
• B) $$- 2$$
• C) $$2$$
• D) $$- 3X$$

Which one is the correct symbol for y-intercept of population regression line?

• A) α (alpha)
• B) r
• C) a
• D) ρ (rho)

Which one is the correct symbol used for POPULATION regression coefficient?

• A) ρ (rho)
• B) R
• C) β (beta)
• D) r

What symbol is used to denote the level of significance in hypothesis testing?

• A) a
• B) α (alpha)
• C) ρ (rho)
• D) r

Suppose you need to test Ho: β = o. Which other hypothesis testing is will give you same result?

• A) Ho: z = o
• B) Ho: t = o
• C) Ho: α = o
• D) Ho: ρ = o

Suppose you need to test Ho: ρ = o. Which other hypothesis testing is will give you same result?

• A) Ho: β = o
• B) Ho: r = o
• C) Ho: α = o
• D) Ho: z = o

Which one is the first step in the hypothesis testing procedure?

• A) Level of significance
• B) Test statistics
• C) Critical region
• D) Stating Hypothesis

In hypothesis testing of simple correlation coefficient, t-test is applicable for _______ .

• A) moderate sample size only
• B) small sample size only
• C) any sample size
• D) large sample size only

$${\text{What is the value of y-intercept in the regression line }}Y = - 1 + 2X{\kern 1pt} {\text{?}}$$

• A) $$- 2$$
• B) $$- 1$$
• C) $$| - 1|$$
• D) $$2$$

$${\text{What is the value of intercept in the regression line }}Y = 2X + 3{\kern 1pt} {\text{?}}$$

• A) $$6$$
• B) $$5$$
• C) $$3$$
• D) $$2$$

Which test is used to check the hypothesis that ρ (rho) is equal to some specific value?

• A) f-test
• B) t-test
• C) chi-test
• D) z-test

$${\text{Which one is the correct symbol for y - intercept, when regression line is calculated by using the sample data?}}$$

• A) $$\rho {\text{ (rho)}}$$
• B) $${\hat y}$$
• C) $$\alpha {\text{ (alpha)}}$$
• D) $$a$$

There is NO linear relationship between X and Y. Which hypothesis should you test?

• A) Ho: α = o
• B) Ho: y = o
• C) Ho: ρ = o
• D) Ho: r = o

$${\text{What is the value of y - intercept in the regression line }}Y = - 2 - 4X{\kern 1pt} {\text{?}}$$

• A) $$4$$
• B) $$2$$
• C) $$- 2$$
• D) $$- 4$$

The point where regression line cuts the axis is called

• A) Origin
• B) Intercept
• C) Centroid
• D) Slop

In hypothesis testing simple correlation coefficient, if sample size is 12 then what is value of degree of freedom?

• A) 12
• B) 9
• C) 11
• D) 10

[Math Processing Error]What is the value of y-intercept in the regression line Y=−1+2X?$${\text{What is the value of y-intercept in the regression line }}Y = - 1 + 2X{\kern 1pt} {\text{?}}$$

• A) [Math Processing Error]−1$$- 1$$
• B) [Math Processing Error]2$$2$$
• C) [Math Processing Error]−2$$- 2$$
• D) [Math Processing Error]|−1|$$| - 1|$$

{\text{What is the value of y - intercept in the regression line }}Y = - 2 - 4X{\kern 1pt} {\text{?}}

• A) 2
• B) 4
• C) - 4
• D) - 2