state gov TSPSC Group 4 Mock Test 2022-2023 Quantitative Aptitude Elementary Statistics

If the arithmetic mean of 13 observations 511, 512, 514, 505, 513, 507, 509, 504, 512, 513, X, 507, 511 is 492. Find the value of "X" in the observations.

1

284

2

278

3

282

4

280

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