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the mean of 10 observation is 15 if one observation 15is added then the new mean is​

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the mean of 10 observation is 15 if one observation 15is added then the new mean is​

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Maria

What is the area allotted to hockey court ?

(a) 12, 600 m2

(b) 22, 000 m2

(c) 20, 000 m2
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if the perimeter of a rectangle with 13 cm length is 40 cm then the breadth is​

2 thoughts on “the mean of 10 observation is 15 if one observation 15is added then the new mean is​”

  2. Answer:

    15

    Step-by-step explanation:

    given, the mean of 10 observation = 15

    => sum of 10 observations = 10*15 = 150

    new observation (11th) added = 15

    => the new sum with the 11th observation = 150+15

    = 165

    so, the new mean = sum of 11 observations / 11

    = 165/11

    = 15

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