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
When you expect something, but get something else, you have a reason big enough to ask new questions and start a new investigation.
Example:
If you create a tree by artificially breeding different species, and then plant it with certain expectations in width, size, bark width, leaf shape, etc. and things go differently, a new investigation might begin with a whole new load of questions.
Answer:

Hope it helped,
Happy homewok/ study/ exam!
Simulations generally involve a simple design. In contrast, the world is a very complex system. Many events, such as how we farm, can disrupt the world's delicate balance. Simulations do not take into account the varied interactions that affect events in the real world.
Answer:
The correct answer is: geography and UV radiation.
Explanation:
Skin variation occurred thanks to evolution, and was driven as a consequence of the geographical location of different populations of humans.
The humans that lived in hot and sunny places, closer to the equator, where much more exposed to the sun's ultraviolet radiation. In order to survive the amount of UV lights that they were exposed to, new humans in those regions were being born with a darker skin tone, which was rich in melanin (a brown pigment that protects us from the sun radiation).
Contrary to these humans that lived in the tropical areas, the humans that populated the areas that were closer to the poles, developed much lighter skin as a result of lower amounts of melanin in their skin. Since sun exposure in the poles is very limited, humans needed to receive as much as they could for the production of Vitamin D, and thus, their skins got lighter and less protected.