Question

xxii) 20g of solid sodium hydroxide were dissolved in distilled water and made to 400cm. 30 cm of this
solution required 27 cm of dilute sulphuric (iv) acid for complete reaction. [Na=23 O=16 H=1]
3
Determine
i. Moles of sodium hydroxide contained in 30 cm of solution
[2 mks]​

Answer 1

Answer:

10

 11

 12

 13

 14

 15

 f

 1

 4

 7

 5

 9

 8

for a frequency distribution,

So, total number of observation =(1+4+7+5+9+8)=34

It is a even number.

So, median is the value of average of values at (2n)th and (2n+2)th.

∴  Here, median is the average of the values at (234)th or 17th position and (234+2)th or 18th position.

 x10 11

 12

 13

 14

15 f

 1

 4

 7

5 9

 8

 position

 1

 1+4=5

 5+7=12

 12+5=17

 17+9=26

 26+8=34

So, value of x at 17th position is