In a School, 100 Pupils Have Heights as Tabulate Below: - Mathematics

Sum

In  a school, 100 pupils have heights as tabulate below:

 Height (in cm ) No. of pupils 121-130 12 131-40 16 141-150 30 151-160 20 161-170 14 171-180 8

Find the median height by drawing an ogive.

Solution

 Height (in cm) No. of pupils Cumulative Frequency 121-130 12 12 131-140 16 28 141-150 30 58 151-160 20 78 161-170 14 92 171-180 8 100

Number of terms =100

∴ Median = 100/2=50^(th) term

Through 50th term mark draw a line parallel to the x-axis which meets the curve at A. from A, draw a perpendicular to x-axis which meets it at B.

Value  of B is the median=148

⇒ Median height = 148 cm

Is there an error in this question or solution?

APPEARS IN

Selina Concise Maths Class 10 ICSE
Chapter 24 Measure of Central Tendency(Mean, Median, Quartiles and Mode)
Exercise 24 (C) | Q 10 | Page 373