Answer:
The correct statements regarding correlation coefficient are:
1. Its absolute value cannot exceed 1.
2. A positive value indicates a strong correlation between the two variables; a negative value indicates a weak correlation between the two variables.
3. If X and Y have positive correlation coefficient, when we run a regression analysis Y=a+bX+e, we will find b positive.
4. If X and Y have positive correlation coefficient, when we run a regression analysis Y=a+bX+e, we will find a positive.
Step-by-step explanation:
Correlation measures the strength of the relationship which exists between X and Y variables. Regression, on the other hand, helps to establish a cause and effect between a dependent variable and an independent variable.
The answer is 10,5 i think
Answer:
Part A) The height of the base is 15 cm
Part B)
Step-by-step explanation:
Part A) What is the height of the base?
we know that
The volume of the triangular prism is equal to
where
B is the area of the triangular face
L is the length of the prism
we have
substitute the given values
solve for B
Find the height of the base
we know that
The area of triangle i equal to
solve for h
Part B) What is the approximate amount of cardboard used to make the candy box?
we know that
To find out the the approximate amount of cardboard used to make the candy box, determine the surface area of the triangular prism
The surface area is equal to
where
B is the area of the triangular base
P is the perimeter of the triangular base
L is the length
we have
Find the perimeter of triangle P
substitute
Answer: Yes. Dominic is correct
Step-by-step explanation:
We are informed that Two fifth of the students wrote a report. This also means that (2/5 × 100) = 40% = 0.4 wrote a report and 0.6 of the students gave a presentation.
From the decimals gotten, we can see that 0.6 is more than 0.4. Therefore, more students gave a presentation. This implies that Dominic is correct.
1. 35 - 2 x 4^2 = 3.
2. 12 divided by (1 + 3^3 - 2^4) = 1.
3. 8^2 divided by [(11-3) x 2] =4.
Have a gud day :)