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MATH 153 Chapter 1

Data Collection & Terminology

Two types of data Qualitative and Quantatative
Two types of quantatative data Discrete and Continuous
True or False: Statistics is the art and science of collecting, organizing, summarizing, and analyzing data. True
Which is an example of descriptive statistics? a) a prediction of next month's employment rates b) making a bet based on a player's current stats c) the median height of women 25 years of age c) the median height of women 25 years of age
Name three data collecting methods Survey, observational study, experimental study
True or False: Systematic sampling is the easiest sampling technique for the collector. False: Convenience sampling is the easiest for the collector.
You want to find out employee satisfaction for your company based on race. The majority of employees are white. Which sampling method will give the most accurate data? a) random sampling b) stratified sampling c) cluster sampling d) systematic sampling b) stratified sampling
Define statistics. Statistics is the science of​ collecting, organizing,​ summarizing, and analyzing information to draw a conclusion and answer questions. In​ addition, statistics is about providing a measure of confidence in any conclusions.
Determine if the variable is qualitative or quantitative. Complete parts A to C below. A) age B) favorite food C) number of people divorced this year A) quantitative B) qualitative C) quantitative
Starbucks contacts 2005 of their employees who also attend college and work full-time and ask whether they are finding enough time for school while working full-time. What is the population in the study? What is the sample in study? Population: employees who work full-time and attend college Sample: the 2005 employees who work full time and attend college
Which allows the researcher to claim causation between an explanatory variable and a response​ variable? a. A designed experiment b. An observational study a. A designed experiment
A(n) _____________ is a numerical summary of a sample. Statistic
A(n) ______________ is a numerical summary of a population. Parameter
________________ are the characteristics of the individuals of the population being studied. Variables
Which sampling method does not require a​ frame? a. Systematic b. Simple random c. Stratified d. Cluster e. All of the above sampling methods require a frame a. Systematic
True or false: A closed question has fixed choices for​ answers, whereas an open question is a​ free-response question. True
Which sampling method is obtained by dividing the population into homogeneous groups and randomly selecting individuals from each group? a. Systematic b. Simple random c. Stratified d. Cluster c. Stratified
Created by: ada354160
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