Basic Statistics – Making Inferences from a Random Sample

Definitions

Population – All members of the studied group

Sample – A portion of the studied group is used to represent the entire population

Random – Every member of the studied group has equal chance at selection

Census – Every member of the studied group is included

Bias – If the sample does not adequately represent the population

Error – Degree to which the results of from the sample are different from the actual results of the population

Outlier – A value that is far larger or smaller than most Continue reading “Basic Statistics – Making Inferences from a Random Sample” »

How to Solve Word Problems

Word Problems
Most students find math word problems difficult.   Word problems are found on must High School Proficiency Exams, College Exams and a few Nursing Entrance exams like the PAX.  Tackling word problems is much easier if you have a systematic approach which we outline below.

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