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:
35.
36.
Step-by-step explanation:
Question 35:
Given:
Plug in 2 for and simplify. This gives,
Therefore, term 2 is 16.
Question 36:
Given:
Plug in 2 for and simplify. This gives,
Therefore, term 2 is 77.
₇P₅ is a permutation. you can find this setting in the statistics menu of your scientific calculator (i think).
If you don't have a scientific calculator, you can use the following formula:
nPr =
₇P₅ =
=
=
= 7 * 6 * 5 * 4 * 3
= 2520
Answer: C