A venture capitalist, willing to invest $1,000,000, has three investments to choose from. The first investment, a software company, has a 10% chance of returning $5,000,000 profit, a 30% chance of returning $1,000,000 profit, and a 60% chance of losing the million dollars. The second company, a hardware company, has a 20% chance of returning $3,000,000 profit, a 40% chance of returning $1,000,000 profit, and a 40% chance of losing the million dollars. The third company, a biotech firm, has a 10% chance of returning $6,000,000 profit, a 70% of no profit or loss, and a 20% chance of losing the million dollars.

Which one is the safest investment? Why do you think so?

Which one is the riskiest investment? Why do you think so?

Hint: Risk is measured by variance, higher the variance bigger the risk.

Which investment has the highest expected return, on average?

We are having the hardest time finding the variance.

This question is posted elsewhere but does not address variance, so I assume our answer may be different based upon that metric.

Safest Investment: Third company Biotech firm

Riskiest Investment :first company Software company.

Highest Return: 2nd company Hardware company.

Step-by-step explanation:

Given:

3 investors with  values as :

1) Software company:

10% on 5 million dollars ( gaining),30% on 1 million dollar(gaining) and  60 % on 1 million dollar (losing )

2)Hardware company

20% on 3 million dollar(gaining) ,40 % on 1 million dollar(gaining) ,40 % on 1 million dollar(losing)

3) Biotech firm

10 % on 6 million dollar (gaining),20% on 1 million dollar(losing)

To find:

Using variance which investment is safe and risk.

Solution:

variance defines a function values how data is spread across the mean value for variance wide range across the mean which indicates risk factor is more in that c.ase

Variance is calculating by using the formula as

Variance= the sum of X values squared divided by the number of values N minus the mean of X values squared.

for calculate expected value 1st gives the average of the company,

For company

Expected value=(probability of profit *cost of profit) -(probability of losing *cost of losing).

For software company

1)E(x)=10%*5 million+1million*30% - 1million*60%)

=200000 dollars.

2)E(x)=20%*3million+40%*1 million - 40% *1million

=600000 dollars.

3)E(x)=10% *6 million-20%*1 million........(70 % is no loss no gain its value will be 0)

=400000 dollars.

No of observation or rounds are

for software 2 profit 1  loss n=3

for hardware 2 profit 1 loss n=3

For biotech firm 1 loss 1 profit  n=2.

Mean value for investment will be μ,

as  μ=E(x)/n

For

1) μ=E(x)/n=2,00,00/30=66,666.67 dollars.

2) μ=E(x)/n=6,00,000/3=200000 dollars.

3) μ=E(x)/n =4,00,000/2=200,000 dollars.

For variance we required  μ^2 so............(EQUATION 1st)

For 1st company,

μ^2=66,666.67^2=4.44*10^9

For 2nd company

μ^2=200000^2=4*10^10

For 3 company

μ^2=200000^2=4*10^10

Now calculating the

Each term square and add them up

For company 1st

Each terms are 5 lac ,3  lac and 1 lac

Add their square values first as follows and repeat same process for other 2 company.

for 1st=

=

For 2nd one,

=

=6.6 *10^11

For 3 rd one ,

=

=4*10^11.

further divide these values by "n"we get,................(EQUATION 2nd)

For 1st company,

=(7*10^11)/3

=2.33*10^11

For 2nd company,

=(6.6*10^11)/3

=2.2*10^11

For 3rd company ,

=(4*10^11)/2

=2*10^11.

To get variance Subtract  equation 2 and 1 ,

For 1st company

Variance=2.33*10^11-0.044*10^11

=2.289*10^11

For 2nd company

variance=2.2*10^11- 0.4*10^11

=1.8*10^11

For 3rd company

variance=2*10^11-0.4*10^11

=1.6 *10^11.

Hence we can conclude that , by definition of variance,