Answer:
.Either these two they are good online and free programs.
AP Environmental Science From the Florida Virtual School.
AP Government From the Florida Virtual School.
Explanation:
Answer:
Explanation:
The <em>correlation coefficient</em> is a measure of the linear association between two variables.
It is a dimensionless value bettween - 1 and +1. Hence, it does not depend on the units that are used to measure the data.
You can see the formula to calculate the correlation coefficient in the attached picture.
There you see that the numerator containts the sum of the differences of the values of the x-variable with its the mean, multiplied by the sum of the differences of the values of the y variable with its mean, while the denominator contains the square root of the product of the squares of the same differences, thus the units are canceled.
In conclusion,<em> If the teacher changes the units of each variable from hours to minutes, the value of the correlation coefficient between minutes studying and minutes spent on the Internet will not change</em>; it will continue being <em>−0.72.</em>
Make musical instruments with your children. ...
Sing to them. ...
Teach them to whistle. ...
Play musical games. ...
Play music in the background. ...
Let them play with instruments. ...
Give them musical colouring in.
Answer:
D
Explanation:
Abraham Lincoln was against slavery and abolished it in 1863. He issued the preliminary Emancipation Proclamation which declared that all enslaved people in the states are forever free.
D us correct because it shows that Lincoln's reaction would not allow any slavery, and slavery is protected by the Constitution.