Answer:
45.24%
Step-by-step explanation:
Given that:
Correlation Coefficient (r) between number of hours a child play video games and number of minutes spent doing homework = - 0.74
The Coefficient of determination (r²) gives the percentage of variation in the dependent variable which can be explained by the independent variable.
Hence, the r² value = (-0.74)² = 0.5476 ; 54.76% which is about 55% variation in the number of minutes spent doing homework can be explained by the number of hours a child plays video games.
Hence the unexplained variance due to differences in children's ages is (100% - 54.76%) = 45.24%
Answer:
1\4
Step-by-step explanation:
I don't exactly know what you are asking but here's what i thought when i saw this: The perimeter of a rectangle with a width of 13 units and a length of 14 units. The area of a square with side lengths of 9 units. The length of a rectangle with a width of 7 units and an area of 28 square units. The side length of a square with an area of 64 square units.
9514 1404 393
Answer:
No
Step-by-step explanation:
Put the value where the variable is and see if you get a true statement.
2(-4) -8 = -15
-8 -8 = -15 . . . . . . . false
-4 is <em>not a solution</em> to the equation