Your question is lacking the necessary answer options, so I will be adding them here:
A. standard deviation.
B. mean.
C. median.
D. correlation coefficient.
E. range.
So, given your question, the statistical measure which is most helpful for indicating the extent to which high school grades predict college grades is: D. correlation coefficient.
A statistical measure can be defined as a numerical measurement of each value of a quantitative variable in a given population. Some of the commonly used statistical measure in science include the following;
Correlation coefficient can be defined as a statistical measure used for the measurement of the strength of the relationship between two (2) known variables and to represent their linear interdependence. Thus, the values of a correlation coefficient typically range from +1 (strong positive relationship) to -1 (strong negative relationship)
Hence, correlation coefficient is a statistical measure which is most helpful for indicating the extent to which high school grades predict college grades because it would determine the strength of the relationship between them.
Find more information: brainly.com/question/19560394
