Which term refers to a group or community that forms the focal point of study and consists of all the people considered for evaluation in the research?

sample
population
variable
mean

The correct answer is option A, Sample

A sample population is a small part of the entire population and it also represents the entire population. In a random sample population, all individual have an equal opportunity of being selected while a featured sample represents the group of individual with specific trait or characteristics. For example , if a study is to be conducted to measure the weight of old age women in society A, then the focus group will include all old aged women and weight of each women in this sample will be included in the research analysis.  

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle