EXST 2201 Exam 1 Questions with Detailed Verified Answers

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EXST 2201 Exam 1 Questions with
Detailed Verified Answers


Question: Statistics


Ans: the science of collecting, organizing, and summarizing, and analyzing
information in order to draw conclusions (science of data)


Question: Sampling


Ans: Techniques used to collect information


Question: Descriptive Statistics


Ans: Techniques used to condense and describe sets of data (frequency
table, histogram, and summary numbers)


Question: Inferential Statistics


Ans: Techniques used to systematically draw conclusions about a
population from a set of sample data


Question: Population


Ans: Totality of elements in a well defined group to be studied


Question: Sample

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Ans: A subset of a population (larger the better)


Question: Individual


Ans: One object from the population


Question: Goals of sampling:


Ans: 1. Representative of population


2. To have a MEASURABLE number of individuals


Question: Simple random sampling


Ans: A method of choosing a sample such that each sample of the same
size has the same chance of being chosen


Question: Random Sampling


Ans: 1. Removes selection bias


2. Doesn't affect natural variability of the data


3. Doesn't guarantee a representative sample


Question: Constant