How can I generate the Radom number between two set of floating point number?

I have number such that

Gain = 0.0000250002787160545;

Bias =-0.124315307973192;

Now, I want to generate the 160 number of gain and bias within +-9% uncertanity.

such that

Gain = 0.0000250002787160545+-9% ;

Bias =-0.124315307973192+-9% ;

Total number of gain should be 160 and bias should be 160.

How can I do this? Would you please suggest me?

Answer 1

[Jan]

Gain0 = 0.0000250002787160545;
Bias0 = -0.124315307973192;

Gain = Gain0 + Gain0 * 0.18 * (rand(1, 160) - 0.5);
Bias = Bias0 + Bias0 * 0.18 * (rand(1, 160) - 0.5);

mean(Gain) - Gain0  % Of course this differs from 0:

ans = 1.1225e-07

min(Gain - Gain0) / Gain0  % Less than 9%:

ans = -0.0890

max(Gain - Gain0) / Gain0

ans = 0.0871

Answer 2

[Meghraj Kc]

You have multiplied with 0.18, Is this because of 9%?

If it is 7% then, we need to multiply by 0.14?