Mathematics

Mathematics

Problem

The lengths of 30 randomly selected 12-day old babies were measured and the following data obtained: For the given data, estimate the:
Length ( LL cm)Frequency
40≤L<4240 \le L < 421
42≤L<4442 \le L < 441
44≤L<4644 \le L < 463
46≤L<4846 \le L < 487
48≤L<5048 \le L < 5011
50≤L<5250 \le L < 525
52≤L<5452 \le L < 542
a. mean b. standard deviation.

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