What is Statistics Skill 01 Statistics Study of

What is Statistics? Skill 01

Statistics… Study of how to collect, organize, analyze, and interpret numerical information from a set of data.

Terms to Know… �Individuals ◦ Objects in the study �Variable ◦ The characteristic to be measured or observed

Terms to Know… �Quantitative Variable ◦ Uses numerical measurement where it is possible to average or add �Qualitative Variable ◦ Individuals are put into a category or group ◦ No numerical measurements

Terms to Know… �Population Data ◦ Data from ALL individuals �Sample Data ◦ Data from SOME of the individuals

Terms to Know… �Population Parameter ◦ Numerical measure to describe some part of a population �Sample Statistic ◦ Numerical measure to describe some part of a sample

I passed a bag of M&Ms to each student, I want to know the average number of each color of M&M in all bags of M&Ms. Identify the individuals… Identify the variable… Is the data collected a sample? If so what is the total population? Qualitative or Quantitative? Why? How could we make it the other kind of data? Is the proportion of viewers a statistic or parameter?

A METV wants to know the proportion of TV owners in Iowa who watch the M*A*S*H at least once a week. The stations asks a group of 1000 TV owners in Iowa if they watch M*A*S*H at least once a week. Identify the individuals… Identify the variable… Is the data collected a sample? If so what is the total population? Qualitative or Quantitative? Why? How could we make it the other kind of data? Is the proportion of viewers a statistic or parameter?

Skill 01: What is Statistics? � Summarize Notes � Read section 1. 1 � Homework ◦ Worksheet