he group of points in T is called a cluster. R is called an outlier. R could be caused by a student being proficient on the piano before practice was measured. There is a positive correlation between the number of hours students practice and the number of pieces they are able to play.
A) The group of points labeled T called cluster. The point labeled R called outlier. Student because of being proficient on the piano before practice was measured.
B) A positive correlation is a relationship between two variables that tend to move in the same direction
Correlation is a statistical measure (expressed as a number) that describes the size and direction of a relationship between two or more variables. A correlation between variables, however, does not automatically mean that the change in one variable is the cause of the change in the values of the other variable.
a)As we know that T is the amount of time each student spends practicing for the play and R is how many pieces are in the play
Here the group of points in T is called a cluster and group of point R is called an outlier.
It can be seen that R could be caused by a student because of being proficient on the piano before practice was measured.
b)As, A positive correlation is a relationship between two variables that tend to move in the same direction
By above discussion it can be seen that there is a positive correlation between the number of hours students practice and the number of pieces they are able to play.
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