Statistical Problem Essay Example | Topics and Well Written Essays - 500 words

Statistical Problem - Essay Example However since it is an online poll, it is difficult to know about the demographical state of those who participated in the poll exactly. Moreover since the poll was conducted during the week end itself it would be rather obvious that all people who were on vacation or at a military cemetery would not be in front of their PC in order to participate in the poll. Hence such a poll would seem very unsuitable, unless if it were carried before the weekend. Simple random sampling is the basic sampling technique where we select a group of subjects (a sample) for study from a larger group (a population). Each individual is chosen entirely by chance and each member of the population has an equal chance of being included in the sample. Every possible sample of a given size has the same chance of selection. c. Based on the above, if we consider the stratified sample of 25 high schools, the number of schools which would be selected with a percent free lunch value between 30 and 40 would be 8% of 25 which equals to 0.08 X 25 =