Download presentation

Published byAnne Lewis Modified over 3 years ago

1
**SEHS Topic 6: Measurement and Evaluation of Human Performance**

2
**Can you calculate the mean and standard deviation**

Can you calculate the mean and standard deviation?(must be able to perform it on a Ti-84 or similar calculator) Instructions:

3
**Outline what information error bars provide on a graph**

4
**What do 1 and 2 standard deviations say about a normally distributed data set?**

Approximately 68% to 95% of the data values fall within +/- one or two standard deviations of the mean

5
**Explain how the standard deviation is useful**

6
**Coefficient of Variation**

7
**When a t-test can be applied?: **

Deduce the significance of the difference between two sets of data using calculated t-test values When a t-test can be applied?: Data should have a normal distribution (aka. a continuous probability distribution ) every normal curve (regardless of its mean or standard deviation) conforms to the following "rule". About 68% of the area under the curve falls within 1 standard deviation of the mean. About 95% of the area under the curve falls within 2 standard deviations of the mean. About 99.7% of the area under the curve falls within 3 standard deviations of the mean.) * Sample size of at least 10/data set *Used for two-tailed *Paired or unpaired data

8
T-test Cont’d

9
**There is a relationship between lung cancer and smoking **

Explain that the existence of a correlation does not establish that there is a causal relationship between two variables Relationship vs cause Specificity There is a relationship between lung cancer and smoking Is smoking the cause of all lung cancers? Strong correlation but not necessarily the cause

10
Proper Study Design When measuring an individual’s fitness levels it is important to ensure it is done as well as possible Main factors to take into account: Specificity (sport specific tests….ex?) Accuracy(technical/instrument upkeep) Reliability (the degree to which a measure would produce the same result from one occasion to another) – test after skill is learned completely to avoid habituation effect Validity(sport specific test and repititions)

11
**Designing sport and exercise science experiments**

Cause and effect experimentation Does taking 20g of creatine phosphate 30 minutes before a resistance training workout produce significant improvement of one’s 1 rep max? What’s wrong with this design? How can it be designed better? PRE-TEST ---- TREATMENT W/ CP POST-TEST

12
**Here’s a hint: EXPERIMENTAL GROUP PRE-TEST ------- ------ POST TEST**

CONTROL GROUP

13
**Made better still by adding a placebo**

Similar presentations

OK

STATISTICS FOR SCIENCE RESEARCH (The Basics). Why Stats? Scientists analyze data collected in an experiment to look for patterns or relationships among.

STATISTICS FOR SCIENCE RESEARCH (The Basics). Why Stats? Scientists analyze data collected in an experiment to look for patterns or relationships among.

© 2018 SlidePlayer.com Inc.

All rights reserved.

To ensure the functioning of the site, we use **cookies**. We share information about your activities on the site with our partners and Google partners: social networks and companies engaged in advertising and web analytics. For more information, see the Privacy Policy and Google Privacy & Terms.
Your consent to our cookies if you continue to use this website.

Ads by Google

Ppt on charge coupled device ccd Ppt on point contact diode operation Working of raster scan display ppt online Nervous system anatomy and physiology ppt on cells Ppt on ip addresses class and range Ppt on asymptotic notation of algorithms Presentation ppt on gerd Ppt on motivational quotes Ppt on weapons of mass destruction book Seminar ppt on android