The lengths of randomly selected -day-old babies were measured

MATHEMATICS · Multi-part · CBSE · Mathematics · Statistics · Statistics

Problem

The lengths of

30

randomly selected

12

-day-old babies were measured, giving the following data. Estimate the: | Length

l

(cm) | Frequency | |---|---| |

40\le l<42

1

| |

42\le l<44

1

| |

44\le l<46

3

| |

46\le l<48

7

| |

48\le l<50

11

| |

50\le l<52

5

| |

52\le l<54

2

| (1) Mean (2) Standard deviation