# Lecture_3_DescriptiveStats.pptx - DESCRIPTIVE STATISTICS...

• Homework Help
• 29

This preview shows page 1 - 8 out of 29 pages.

DESCRIPTIVE STATISTICSIntermediate Stats LabSTA 3163L-006Lecture 3
TODAY’S GOALSTo learn where the middle of your data set is (central tendency)oMean, Median, ModeTo learn how broad the variables in your data set are (statistical dispersion)oRange, Variance, Standard DeviationTo learn the shape of your distributionoNormal Distributions
TWO TYPES OF STATISTICSDESCRIPTIVE STATISTICSDescribe a sampleMeanStandard DeviationVarianceINFERENTIAL STATISTICSAllow researchers to infer characteristics of a population3
DESCRIPTIVE STATISTICSEasily telling people about your dataCollecting data can be easy and fun. But sometimes it can be hard to tell other people about what you have found. That’s why we use statistics. Two kinds of statistics are frequently used to describe data. They are measures of central tendency and dispersion. These are often calleddescriptive statisticsbecause they can help youdescribeyour data.Statistics Help For Students (2008). What are measures of central tendency and dispersion?Retrieved from
MEASURES OF CENTRAL TENDENCY
THREE MEASURES OF CENTRAL TENDENCY:Mean – average data point of all the variables in your data setMedian – data point found in middleMode – data point found which occurs most often5