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Answer:
The first quartile is 61 and the third quartile is 63.
Step-by-step explanation:
From the given dot plot is noticed that
Temperature frequency
59 0
60 2
61 3
62 3
63 4
64 2
65 1
Total 15
It means the data is in the form of
60,60,61,61,61,62,62,62,63,63,63,63,64,64,65
The median of data is middle term. The total number terms is 15. Therefore 7th terms is the median
(60,60,61,61,61,62,62),62,(63,63,63,63,64,64,65)
Now, we have 7 ters before median and 7 terms after median.
First quartile is the middle term of minimum value and median and third quartile is the middle term of maximum value and median.
So, 4th term is first quartile and 12th term is third quartile.
(60,60,61),61,(61,62,62),62,(63,63,63),63,(64,64,65)
Therefore the first quartile is 61 and the third quartile is 63.
