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In situations where there is a logical tie
between the data we use a matched pairs
experiment
• In this experiment we match an observation
in one sample with an observation in another
• The match is created due to the logical tie
they share.
• Ex. Studying salaries of marketing and
finance majors with similar GPA's - the
logical connection is similar GPS's, the data
we are pairing is salaries.
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Why did Mendel study such a large sample of pea plants to determine the probability of inheritance?
The more samples you use, the closer your results will match probability.
There are six pairs of black gloves and six pairs of brown gloves in a drawer In complete darkness how many gloves must you take from the drawer in order to be sure to get a pair that match?
3
A sock drawer has 2 blue pair 4 white pair 4 black pair What is the probability you will pick out a black pair?
40%
Josh has 4 shirts white blue green and red and 4 pairs of socks in the same colors. Josh grabs a shirt and a pair of socks without looking. What is the probability that his shirt and socks will match?
The probability that they are the same colour - which is not the same as them matching - is 1/4.
What is a ordered pair?
An ordered pair is a list of two numbers, in which the order matters. For example, (5, 2) is an ordered pair; this pair is not the same as (2, 5). For comparison, for the numbers in a set the order does not matter.
