If the first ten elements of the set x1, x2,........., x15 are replaced by xi + 5, i = 1, 2, 3, ......... , 10 and next five elements are replaced by xj – 4, j = 11, 12, ....., 15, then the new mean will change by

Foundation

Mathematics Foundation

Mean

Question

If the first ten elements of the set x₁, x₂,........., x₁₅ are replaced by x_i + 5, i = 1, 2, 3, ......... , 10 and next five elements are replaced by x_j – 4, j = 11, 12, ....., 15, then the new mean will change by

none

LiveFree JEE Main Previous Year Online Papers Live Free JEE Advance Previous Year Online Papers

College PredictorLive

Know your College Admission Chances Based on your Rank/Percentile, Category and Home State.

Get your JEE Main Personalised Report with Top Predicted Colleges in JoSA

New mean will change by $= \frac{5 \times 10 - 4 \times 5}{15} = 2$

Please subscribe our Youtube channel to unlock this solution.