Ch 1 secs 3-5

# Ch 1 secs 3-5 - MAT150StatisticsI Lesson2 Mr.Horwitz...

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Mr. Horwitz September 13, 2010 Chapter 1 Sections 3-5 MAT-150 Statistics I Lesson 2

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Design a statistical study What type of study are you going to do?  Identify the variables of interest and the population  of the study. Develop a plan for collecting data.  If you use a  sample, make sure the sample is representative of the  population. Collect the data Interpret the data and make decisions about the  population using inferential statistics. Identify any sources of error.
What type of study are you going to do? Observational study – where the researcher observes  and measures characteristics of interest of part of a  population but does not change the existing  conditions.  Ex. Study of animals in the wild. Perform an experiment – a treatment is applied to  part of a population and responses are observed.  Ex.   Science Class Use a simulation – is the use of a mathematical or

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