Question

1. Find the mean of first seven even natural numbers :
2. Find the median of first 50 whole numbers.​

Answer 1

Answer:

1. Mean= sum of all obs./ No. of obs

first 7even natural numbers atey

2,4,6,8,10,12,&14

=2+4+6+8+10+12+14

=56/7

=8

2. n = 50(even)

median =(n/2)th + (n/2+1)th /2

=(25th +. 26th) /2

=(24+25)/2

=48/2

=24.5

Step-by-step explanation:

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Answer 2

Answer:

1. Find :- Mean of first seven even natural numbers

Solution:-

First seven even natural numbers = 2,4,6,8,10,12,14

${ \boxed{ \sf{ \to{mean = \frac{sum \: of \: given \: observations}{total \: number \: of \: observations} }}}}$

${ \implies{ \frac{2 + 4 + 6 + 8 + 10 + 12 + 14}{7} }}$

${ \implies{ \frac{56}{7} }}$

${ \implies{ \frac{{ \cancel{56}}}{{ \cancel{7} }} = 8 }}$

Therefore Mean of first seven Even natural numbers is 8.

2. Find :- Find the median of first 50 whole numbers.

Solution:-

The first 50 whole numbers are 0,1,2,3,4,…,49.

Here n=50, which is even.

"n is the number of the given number."

${ \boxed{\to{median \: = ( \frac{1}{2} \times \frac{n}{2} ) + ( \frac{n}{2} + 1 )}}}$

N = 50

${ \implies{ \frac{1}{2} \times \frac{50}{2} + \frac{50}{2} + 1}}$

${ \implies{ \frac{1}{2} \times 25 th \: \: term+( 25 + 1 )th \: \: term}}$

${ \implies{ \frac{1}{2} ( \times 25 th \: \: term+ 26th \: \: term)}}$

${ \implies{ \frac{1}{2} \times (24 + 25)}}$

${ \implies{ \frac{1}{2} \times 49 }}$

${ \implies{ \frac{49}{2} }}$

${ \implies{24.5}}$

Therefore the median of first 50 whole numbers is 24.5