IB SEHS Topic 6 Exam 2025 Questions
and Answers
Standard Deviation - ANSWER✔✔-a spread of scores around the mean
State why standard deviation is useful - ANSWER✔✔-Displays the consistency of each
sample
t-test - ANSWER✔✔-used to determine if two sets of data are significantly different
from each other.
Error bars - ANSWER✔✔-graphical representation of variability of the data
What constant do we use for error bars? - ANSWER✔✔-2
Specificity - ANSWER✔✔-Measuring the skills needed for a sport can see how well the
athlete can maintain that skill when repeatedly doing it.
Accuracy - ANSWER✔✔-Checking if the instruments you're using in an experiment are
working properly
Reliability - ANSWER✔✔-if you repeated the test again are you likely to get similar
results
, Validity - ANSWER✔✔-Does the test actually test what is tests
Control group - ANSWER✔✔-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? - ANSWER✔✔-To see if your hypothesis
correlates with the data collected and overcoming learning problems
Randomized groups - ANSWER✔✔-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 - ANSWER✔✔-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 - ANSWER✔✔-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 - ANSWER✔✔-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 - ANSWER✔✔-a questionnaire that makes sure the participant doesn't have any
health issues that will put them in danger in the experiment
Field testing - ANSWER✔✔-tests that can be done without expensive equipment.
and Answers
Standard Deviation - ANSWER✔✔-a spread of scores around the mean
State why standard deviation is useful - ANSWER✔✔-Displays the consistency of each
sample
t-test - ANSWER✔✔-used to determine if two sets of data are significantly different
from each other.
Error bars - ANSWER✔✔-graphical representation of variability of the data
What constant do we use for error bars? - ANSWER✔✔-2
Specificity - ANSWER✔✔-Measuring the skills needed for a sport can see how well the
athlete can maintain that skill when repeatedly doing it.
Accuracy - ANSWER✔✔-Checking if the instruments you're using in an experiment are
working properly
Reliability - ANSWER✔✔-if you repeated the test again are you likely to get similar
results
, Validity - ANSWER✔✔-Does the test actually test what is tests
Control group - ANSWER✔✔-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? - ANSWER✔✔-To see if your hypothesis
correlates with the data collected and overcoming learning problems
Randomized groups - ANSWER✔✔-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 - ANSWER✔✔-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 - ANSWER✔✔-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 - ANSWER✔✔-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 - ANSWER✔✔-a questionnaire that makes sure the participant doesn't have any
health issues that will put them in danger in the experiment
Field testing - ANSWER✔✔-tests that can be done without expensive equipment.
