Q9: A certain manufacturing process requires that a small hole be drilled into the centre of a metal plate. To regulate that the size of the hole is adequate, samples are taken daily, and the diameters of these holes are measured in mm. The data below is the diameters of the holes drilled in 1st week of January 2022. 3.9 2.53 2.46 2.52 Calculate: (i) Mean (ii) Medium (iii) Mode 2.45 2.53 2.57 2.52

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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Q9: A certain manufacturing process requires that a small hole be drilled into the centre of a metal plate. To regulate that the
size of the hole is adequate, samples are taken daily, and the diameters of these holes are measured in mm. The data below is
the diameters of the holes drilled in 1st week of January 2022.
3.9
2.53
2.46
2.52
Calculate:
(i) Mean
(ii) Medium
2.45
(iii) Mode
(iv) Standard deviation to three significant figures.
(v) Interpret the data shown on frequency bar chart or Histogram
2.53
2.57
2.52
Transcribed Image Text:Q9: A certain manufacturing process requires that a small hole be drilled into the centre of a metal plate. To regulate that the size of the hole is adequate, samples are taken daily, and the diameters of these holes are measured in mm. The data below is the diameters of the holes drilled in 1st week of January 2022. 3.9 2.53 2.46 2.52 Calculate: (i) Mean (ii) Medium 2.45 (iii) Mode (iv) Standard deviation to three significant figures. (v) Interpret the data shown on frequency bar chart or Histogram 2.53 2.57 2.52
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