1 The two variables in a scatter plot are called the A indep

1. The two variables in a scatter plot are called the

A. independent variable and dependent variable.

B. relative frequency and relative proportion.

C. spread and pattern.

D. lines and points.

2. The range of the correlation coefficient is from 0 to 1

A. True.

B. false

3. A researcher has reason to believe that, for an experiment with 40 points, a 95% prediction interval would be of width 8. If the researcher wishes to run a more precise experiment that will result in a 95% prediction interval of width 4, then the researcher will require how many points

Solution

1) A : A scatter plot has points that show the relationship between two set of data . the data is plotted on the graph as (x,y) where x is independent and y is dependent

2) A :false the range of corelation coefficent is -1 to 1