In a study conducted recently, the body weight of youth wresting team in Mongolia are found to be as follows: Body weight Class(kg) Frequency (Wrestlers) 70 < X ≤ 80 5 80 < X ≤ 90 14 90 < X ≤ 100 21 100 < X ≤ 110 26 110 < X ≤ 120 35 120 < X ≤ 130 23 130 < X ≤ 140 18 140 < X ≤ 150 15 150 < X ≤ 160 7 Construct an Ogive curve reflecting the above data.

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In a study conducted recently, the body weight of youth wresting team in Mongolia are found to be as follows:

Body weight Class(kg)

Frequency (Wrestlers)

70 < X ≤ 80

5

80 < X ≤ 90

14

90 < X ≤ 100

21

100 < X ≤ 110

26

110 < X ≤ 120

35

120 < X ≤ 130

23

130 < X ≤ 140

18

140 < X ≤ 150

15

150 < X ≤ 160

7

Construct an Ogive curve reflecting the above data.

Approximately what percentage of the wrestlers weigh less than 130kg?

Approximately what percentage of the wrestlers weigh between 85kg and 145kg

Approximately what is the body weight of the top 30% youth wrestlers?

 

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