Question

Question No. 13
• In analysis following values are
obtained 36.47, 36.48, 36,49,36.50. On
the basis of 2.5d rule find weather value
36.50 can be retained or rejected?
Answer
A Rejected
B. Retained
C. None
D. Both​

Answer 1

Answer:

Retained is the answer

Explanation:

☝️

Answer 2

Answer:

given:

2.5d rule

number of observations: 36.47, 36.48, 36,49, 36.50 ==> 4 observations

for 4 observations, n=4, then at Q = 0.76 from reference Q table

To find:

find weather value 36.50 can be retained or rejected?

Explanation:

The value of Q is :

Qcal = X2 - X1/ Xn - X1

   = 36.48 - 36.47 / 36.50 - 36.47

   = 0.01/0.03

   = 0.33

thus, Qcal = 0.33

• now on, consulting the table of Q for the given number of observations = Qtabular,

• Compare Qcalc with Qtabular.

• If Qcalc. > Qtabular, then the suspected value is. if Qcalc. < Qtabular then the suspected value is retained.

now,

0.33 < 0.76 = Qcalc. < Qtabular

hence, 36.50 is retained.