ЁЯУв Too many exams? DonтАЩt know which one suits you best? Book Your Free Expert ЁЯСЙ call Now!

    Question

    Find the standard deviation of the following data

    (rounded of the two decimal places). 5,3,4,7
    A 1.78 Correct Answer Incorrect Answer
    B 1.48 Correct Answer Incorrect Answer
    C 2.18 Correct Answer Incorrect Answer
    D 4.75 Correct Answer Incorrect Answer

    Solution

    Observation = 5,3,4,7 Mean = (5+3+4+7)/4 =19/4 = 4.75. Squared Differences from the Mean= (5-4.75)2 = 0.0625 (3-4.75)2=3.0625 (4-4.75)2 = 0.5625 (7-4.75)2=5.0625 Variance = (0.0625+3.0625 +0.5625 +5.0625)/4 =8.75/4 = 2.1875 Standard Deviation=тИЪ2.1875 =1.48 Standard Deviation = 1.48

    Practice Next
    More Arithmetic Progression Questions

    Relevant for Exams:

    ask-question