Aptitude,SQL,Data Interpretation

1. Which of the following testing is concerned with making decisions using data?
   a) Probability
   b) Hypothesis
   c) Causal
   d) None of the mentioned

1. 2. Which statement upgrades the database directory name encoding?
   a) ALTER DATABASE
   b) ALTER SERVER
   c) ALTER EVENT
   d) ALTER FUNCTION
   d) None of the mentioned

1. Which of the following tool is used for estimating standard errors and the bias of estimators?
   a) knitr
   b) jackknife
   c) ggplot2
   d) all of the mentioned

Which of the following is correct with respect to residuals?
a) Positive residuals are above the line, negative residuals are below
b) Positive residuals are below the line, negative residuals are above
c) Positive residuals and negative residuals are below the line
d) All of the mentioned