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→Activity 1 : Central Tendency
which situation which measure must be used.
which situation which measure must be used.
==== Pre-requisites/ Instructions ====
==== Pre-requisites/ Instructions ====
Solve the problems A and B
Solve the problems A and B
A. 27 members of a
A. 27 members of a
class were given a puzzle to solve and the times (in minutes) each
class were given a puzzle to solve and the times (in minutes) each
pupil took to solve it were noted.
pupil took to solve it were noted.
{| border="1"
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#
#
# Which of the three measures do you think is most representative of the average time? In this case it is probably the mean, but this will not always be so.
# Which of the three measures do you think is most representative of the average time? In this case it is probably the mean, but this will not always be so.
'''B Choosing which measure to use '''
'''B Choosing which measure to use '''
# What is the size that is sold the most ?
# What is the size that is sold the most ?
# Which of these measures is of most use?
# Which of these measures is of most use?
Dress sizes sold in one week
Dress sizes sold in one week
{| border="1"
{| border="1"
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==== Evaluation ====
==== Evaluation ====
# Can the student calculate each of the measures ?
# Can the student calculate each of the measures ?
# Does the student know which measure is useful and represents the actual data given a data set ?
# Does the student know which measure is useful and represents the actual data given a data set ?
== Self-Evaluation ==
== Self-Evaluation ==