IB SEHS Topic 6 Graded A+

IB SEHS Topic 6 Graded A+ Standard Deviation ️a spread of scores around the mean State why standard deviation is useful ️Displays the consistency of each sample t-test ️used to determine if two sets of data are significantly different from each other. Error bars ️graphical representation of variability of the data What constant do we use for error bars? ️2 Specificity ️Measuring the skills needed for a sport can see how well the athlete can maintain that skill when repeatedly doing it. Accuracy ️Checking if the instruments you're using in an experiment are working properly Reliability ️if you repeated the test again are you likely to get similar results Validity ️Does the test actually test what is tests Control group ️a bunch of people are put into a group that doesn't get any special treatment for the experiment. Why is it important to have an control group? ️To see if your hypothesis correlates with the data collected and overcoming learning problems Randomized groups ️People of various skill levels are put in different groups by random. This is to ensure that we don't favor one group over another. Blind experiment ️Participants in the experiment don't know which group they are in. If the participants know what they are getting, it will defeat the purpose of the experiment Double blind experiment ️both the participants and the experimenters are unaware of who is in the experimental or control groups. This is to make sure that neither party influences the results. Placebo ️A harmless substance given to the participants in the controlled group. The substance won't affect the person's performance during the experiment. PAR-Q ️a questionnaire that makes sure the participant doesn't have any health issues that will put them in danger in the experiment Field testing ️tests that can be done without expensive equipment. Laboratory testing ️experiments that are done in a lab. More accurate than field testing Maximal ️testing for a person's maximum ability. Used for people who are physically fit Sub-maximal ️For people who are afraid or aren't knowledgeable of pushing their limits. Good for children and the elderly Body composition ️The relation of fat mass to fat free mass (bones, muscles etc) Cardiovascular fitness ️ability to take in, deliver and use oxygen for use of a aerobic activity Flexibility ️ability to move through a full range of movement around a joint Muscular strength ️ability to generate force using muscle(s) Muscular endurance ️ability of a muscle(s) to maintain force or power Way to remember health related fitnesses ️Charlie's Mom Said Fantastic Boots Agility ️The ability to change direction at speed with control Balance ️stability of body Coordination ️the ability to use different parts of the body together smoothly and efficiently Reaction time ️duration between presentation of a stimulus and associated response Speed ️change of distance with respect to time when movement occurs Power ️rate of doing work Harvard Step Test ️testing the participant on heart rate recovery after performing the task. Cooper 12 minute run test ️Participant run/walk as fast as they can in 12 minutes. Multi-stage fitness test ️AKA the Beep test. Participant runs increasingly faster in 20 meter shuttles until they're exhausted Sit and reach test ️Tests the flexibility of a person in the lower back and hamstring muscles. Maximum push up test ️Participant does as many push ups as they can with no time limit. This measures upper body strength and enduranc Sit up test ️Measure the strength and endurance of your stomach and hip-flexor muscles Illinos ️Tests agility by having you run as quickly as possible through a series of cones placed in a certain way Hand grip dynamometer ️Measures the maximum strength of your hand and forearm using this machine 40 meter sprint test ️The person being tested sprints 40 meters as fast as they can. Warm-ups and practice sprints should be done before test BMI ️Equation to calculate the if your is normal, overweight and obese (person's weight divided by