A pedagogical research institute wanted to test a new method for teaching geometry by assessing whether It helps students achieve higher grades. They decided to conduct a study using A volunteering high school with a total of 750 students At the beginning of the semester, 2 out of the 4 high schools were randomly picked to use the new teaching method, while the remaining 2 schools kept teaching with traditional methods. The first pair had a total of 400 students, and the second pair had a total of 350 students. By the end of the semester, the researchers compared the average scores in the geometry section of the final exam for each pair of schools. What type of statistical study did the researchers use

Experimental Statistical Study

Step-by-step explanation:

Of the three types of statistical study, the one used by the researcher in this question is the experimental statistical study and the reason is as follows:

From the question, a study was conducted on a total of 4 high schools; these high schools were further divided into 2 pairs.

Each pair were subjected to or experimented with different method of teachings. At the end of the semester, the average were compared.

This implies that both pairs were experimented based on different teaching methods and the result of the methods were measured in order to determine which of the methods is better.

This type of study is experimental

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

ok thats very interesting