Come on guys, try this out !
The list gives the scores a group of students who took part in a mathematics quiz.
10, 7, 14, 38, 26, 16, 10, 21
Find:
(a) Mode
= 10 (the most popular number)
(b) Mean
: 10 + 7 + 14 + 38 + 26 + 16 + 10 + 21 / 8 = 17.75 (Plus all the numbers and then divided by how many terms)
(c) Median
: Arranged the numbers from the smallest to biggest
7 , 10 , 10, 14 , 16, 21, 26, 38
Since there is 14 and 16 are the middle numbers. Plus 14 + 16 then divided it into 2. The answer is 15.
(d) Range
: This will be the simplest one. Just subtract the highest number with the smallest one.
38 - 7 = 31 (ans)
(e) The lower and upper quartile
: there is three quartile altogether
• lower quartile
• middle quartile
• upper quartile
So to find the:
Lower quartile -> 1/4 × 8 (no.of terms)
= 2.
Upper quartile -> 3/4 × 8 (no.of.terms)
= 6.
Lower = 10.
Upper = 26.
(d) The inter quartile range
: Minus the upper quartile - lower qurtile
26 - 10 = 16 (ans)
The list gives the scores a group of students who took part in a mathematics quiz.
10, 7, 14, 38, 26, 16, 10, 21
Find:
(a) Mode
= 10 (the most popular number)
(b) Mean
: 10 + 7 + 14 + 38 + 26 + 16 + 10 + 21 / 8 = 17.75 (Plus all the numbers and then divided by how many terms)
(c) Median
: Arranged the numbers from the smallest to biggest
7 , 10 , 10, 14 , 16, 21, 26, 38
Since there is 14 and 16 are the middle numbers. Plus 14 + 16 then divided it into 2. The answer is 15.
(d) Range
: This will be the simplest one. Just subtract the highest number with the smallest one.
38 - 7 = 31 (ans)
(e) The lower and upper quartile
: there is three quartile altogether
• lower quartile
• middle quartile
• upper quartile
So to find the:
Lower quartile -> 1/4 × 8 (no.of terms)
= 2.
Upper quartile -> 3/4 × 8 (no.of.terms)
= 6.
Lower = 10.
Upper = 26.
(d) The inter quartile range
: Minus the upper quartile - lower qurtile
26 - 10 = 16 (ans)
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