PROBABILITY TUTORS

Correlation coefficients are used to assess the strength and direction of the linear relationships between pairs of variables. When both variables are normally distributed use Pearson's correlation coefficient, otherwise use Spearman's correlation coefficient. Spearman's correlation coefficient is more robust to outliers than is Pearson's correlation coefficient. Correlation coefficients do not communicate information about whether one variable moves in response to another. There is no attempt to establish one variable as dependent and the other as independent. Thus, relationships identified using correlation coefficients should be interpreted for what they are: associations, not causal relationships.⁵Correlation must not be used to assess agreement between methods. Agreement between methods should be assessed using Bland-Altman plots

1.how do the residual stress result in local early strain hardening

2.is the statement;reduction in ductility reduces strength of member relevant

3.The shear lag effect _____ with increase in connection length; explain

4.what is the parameter that dictate themode in bearing failure

5.explain in the improvement of the carrying capacity of tension member during staggering of holes

6.The presence of holes _____ the strength of tension member

7.hold;strength of members with punched holes is less than members with drilled holes correct to justifications

8.how is the ratio0.7 arrived at while deriving the preliminary design for angle section as per IS code

9.why is it like; thickness of angle has no significant influence on member strength

10.render; When angles are connected to gusset plates by welding or bolting only through one of the two legs resulting in eccentric loading misleading