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Question

take/launch.jsp?course-assessment_id-_128035_1&course-ide-98758;_1&content;_id»-21.. QUESTION 2 The following table displays the marks obtained by three students on an economics test Marks Obtained (out of 100 78 83 65 Tony a) Calculate the mean marks obtained by the three students. b) Suppose one of the scores was reported incorrectly. Charles scored 38 instcad of 83. How will the mean change if the correction is c) How does the amount of data used affect the accuracy of a model? T TT Arial , 3(12pt) ·-·-·R:

Explanation / Answer

Answer A:- Mean =(78+83+65)/3 =75.33

Answer B:- Revised Mean = =(78+38+65)/3 =60.33

Answer c:- Variation in Accuracy = [(75.33-60.33)/75.33]*100 =19.91% accuracy difference

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