Business Statistics

Chapter 3 | Measures of Central Tendency 113

Income

(Rs)

30–40 40–50 50–60 60–70 70–80 80–90 90–100

Number

of persons

6 12 18 13 9 4 1

4. Compute geometric mean for the data given in Problems 1–3.

5. Compute harmonic mean for the data given in Problems 1–3.

6. Compute median for the data given in Problems 1–3.

7. Compute mode for the data given in Problem 1.

8. Compute rst and third quartiles for the data given in

Problem 1 and Problem 2.

9. Compute deciles for the data given in Problem 1.

10. Compute percentiles for the data given in Problem 1.

formUlaS |

Arithmetic mean for individual series

1 2

AM

+ + +

= =



n

x x x

n

i

1

1