Please answer all sub parts Increasing joint extension is one goal of post-surgical rehabilitation therapy. In a study to evaluate the effect of therapy which uses ultrasound and stretching, passive...

Please answer all sub parts

Increasing joint extension is one goal of post-surgical rehabilitation therapy. In a study to evaluate the effect of therapy which uses ultrasound and stretching, passive knee extension was measured after each treatment.  Passive knee extension data is given (in degrees) for a sample of 10 therapy participants.

55   44   61   52   54   70   44   53   59   52

Compute the following:

        a)  Mean

         b)  Median

         c)  Range

         d)  Standard Deviation

         e)  What would be the z-score for a patient that experienced a knee extension of 57 degrees?

          f) Should a therapist be concerned about a patient who experienced a knee extension of less than 45 degrees?  Why?