Q3: How can I select the test(s) for calculation?
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The following three methods can be used.

1. left click 

   .. figure:: ../source/img/selectTest_1.gif
      :width: 1000
      :align: center


2. select/ unselect all tests

   .. figure:: ../source/img/selectTest_2.gif
      :width: 1000
      :align: center


3. type the test number

   .. figure:: ../source/img/selectTest_3.gif
      :width: 1000
      :align: center