Login/Sign Up
Home » The daily income of a sample of 50 employees are tabulated as follows : Income (in Rs) 1-200 201-400 401-600 601-800 Number of employees 14 15 14 7 Find the mean daily income of employees.
The daily income of a sample of 50 employees are tabulated as follows : Income (in Rs) 1-200 201-400 401-600 601-800 Number of employees 14 15 14 7 Find the mean daily income of employees.
CBSE | Class 10 | Exercise 13.3 | Maths | NCERT Exemplar | Statistics and Probability
The daily income of a sample of 50 employees are tabulated as follows : Income (in Rs) 1-200 201-400 401-600 601-800 Number of employees 14 15 14 7 Find the mean daily income of employees.

C.I          xi            di = (xi – a)          Fi            fidi

1 – 200  100.5     –200      14           –2800

201 – 400            300.5     0             15           0

401 – 600            500.5     200        15           2800

601 – 800            700.5     400        7             2800

    \[\Sigma fi\text{ }=\text{ }50~\sigma fixi\text{ }=\text{ }2800\]

∴ Assumed mean, a = 300.5 and di = (xi – a)

NCERT Exemplar Class 10 Maths Chapter 13 Ex. 13.3 Question 5

    \[=\text{ }300.5\text{ }+\text{ }2800/50\]

= 356.5

Subsequently, the normal day by day pay of representatives = Rs.356.5

i

More Material