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Exercise




                                                         Solved Questions


                                                  SECTION A (Objective Type Questions)
                          uiz
                 A.   Tick ( ) the correct option.
                     1.   Which one of the following is NOT suitable for examining the relationship between two quantitative variables?
                          a.  Scatterplot                                b.  Bar Chart
                          c.  Correlation                                d.  Contingency Table

                     2.   In the linear regression equation y = mx+b, m represents       .
                          a.  estimated or predicted response            b.  independent variable
                          c.  estimated slope                            d.  estimated intercept

                     3.   In the linear regression equation y = mx+b, b represents      .
                          a.  estimated or predicted response            b.  explanatory variable
                          c.  estimated slope                            d.  estimated intercept
                     4.   Which of the following type of association shown through the given scatterplot?















                          a.  Positive linear association                b.   Positive curvilinear association

                          c.  Negative linear association                d.   Negative curvilinear association
                     5.   In the simple linear regression equation, the symbol x represents the   .
                          a.  estimated or predicted response            b.  estimated intercept
                          c.  estimated slope                            d.  independent variable

                     6.   A regression between foot length (dependent variable in cm) and height (independent variable in inches) for 33
                          students resulted in the following equation:

                                                                y = 10.9 + 0.23x
                          A student in the sample was 71 inches tall with a foot length of 27 cm. What is the predicted foot length for this
                          student?
                          a.  17.57 cm                                   b.  27.23 cm
                          c.  29 cm                                      d.  33 cm
                     7.   Which of the following is a disadvantage with using a regression line to analyse a dataset?
                          a.  Presence of one or more outliers           b.  Inappropriately group combining

                          c.  Curvilinear data                           d.  Response variable is qualitative



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