Turn in IB Psychology 12 08 16 Nothing

➢Turn in: IB Psychology 12. 08. 16 ➢Nothing ➢Take out: ➢Notes, notes ➢Today’s Learning Objectives: ➢I can write an impactful introduction in order to successfully preface my Internal Assessment. Today’s Agenda: ➢ Work Day… ➢ More Internal Assessment! – More Statistics & Such… ➢ HW: ➢ Results due Friday by EOC

Best advice: LOOK AT THE EXAMPLES ON MY WEBSITE… and seek some others more specific to your study… We might even score them together…

Discreet vs. Continuous Data Discreet: Cannot be divided…only occurs in certain values (a guitar, a correct answer, school attended, yes/no, etc. ) Continuous: can be divided infinitely, has no other distinct value (best example: TIME) • You can usually tell the difference between discrete and continuous data because: Discreet is typically COUNTED Continuous is typically MEASURED

Levels of Measurement Nominal—sounds like “Name” non-numeric, or numbers can be ordered in any fashion…discreet data • Ex: Students that ate breakfast, jersey numbers on athletes, gender, race, etc. Ordinal—sounds like “Order” the order matters but the differences do not matter • Ex: Grades—we know an “A” is better than “D” but do we really know how much better? Rating Scales, order of finishing a race, etc. Interval—The distance between two things: the order and differences between levels of a variable matter, but they are not in a ratio • Ex: temperature, time, etc. Ratio—the numbers tell us how much of one thing we have in comparison to another thing. • Ex: a score of 75% compared to 50%, Three times as fast, etc.

Descriptive Statistics: Summarizing Data: – Central Tendency (or Groups’ “Middle Values”) • Mean • Median • Mode – Variation (or Summary of Differences Within Groups) • • Range Interquartile Range Variance Standard Deviation Calculate ALL, Pick ONE: be able to justify your use of the central tendency… Calculate ALL (? ), Pick ONE: be able to justify your use of the variation… Most likely…

Descriptive Statistics: Which should you use? ? ? Calculate ALL, Pick ONE: be able to justify your use of the central tendency… Calculate ALL (? ), Pick ONE: be able to justify your use of the variation…SD most likely

Formula for “Standard Deviation of a Sample”