The correlation between two variables is –0.63 for a sample of 20 observations. What is the coefficient of determination between
1 answer:
Answer:
b) 0.3969
Step-by-step explanation:
Given that the correlation between two variables is –0.63 for a sample of 20 observations.
Correlation is the measure of linear association between two variables. Normally this varies from -1 to 1 . Here this is given as -0.63
Coefficient of determination has to be found out
Coefficient of determination, being the cause of variation caused by one variable on another is obtained by square correlation coefficient.
Hence coefficient of determination =
Hence correct option is option b) 0.3969
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Answer:
She can paint <u>6 rooms</u>.
Step-by-step explanation:
Given:
Maya decided to paint some of the rooms in her hotel. She found out that a room required 3/2 cans of paint.
If Maya buys 9 cans of paint.
Now, to find the rooms she can paint.
So, we use unitary method to get the number of rooms:
If, cans of paint is needed to paint 1 room.
Then, 1 can of paint is needed to paint = room.
Thus, 9 cans of paint is needed to paint =
Therefore, she can paint 6 rooms.