This document contains 10 questions for a business mathematics and statistics exam. The questions cover topics such as arithmetic progressions, simple and compound interest, annuities, sinking funds, measures of central tendency, measures of dispersion, time series analysis, and classification of business data. Students are asked to answer any 5 of the 10 questions. The document was written by Nirbhay Mishra, a faculty member at Purnea College in Purnea, India, and provides his contact information at the end.

1. BUSINESS MATHEMATICS & STATISTICS
PAPER 4
Answer any five questions.
Q1 a)Find the sum of n terms of an A.P.
b)Find the sum of 17 terms of the AP 5, 9, 13, 17,
Q2a) Write and explain the formula for simple interest.
b) In how many years will a sum of money triple itself, at 25% per annum simple interest.
Q 3. (a) Find the compound interest on Rs. 8000 at 15% per annum for 4 months, compound
annually
b)What will be the compound interest on Rs4000 in 4 years at 8% per annum. If the interest is
calculated half yearly?
Q4) a Define Annuity with example.
Q4) b. What is a sinking fund? How does sinking fund work ?
Q5) Explain the meaning of the word statistics' as used in different sense
Q6a) Explain the Arithmetic mean with example.
Q6b) Write and explain the formula for Median
Q7) find the mode for the following distribution:
Class Interval 0-10 10-20 20-30 30-40 40-50 50-60
Frequency 5 8 7 12 28 20
Q8 Explain-
a) Range
(b) Quartile Deviation
(c) Mean Deviation
Q9. Explain

2. a)Standard Deviation
(b) Co-efficient of variation
Q10) write short notes on any three
a)Time Series Analysis
b)Graphic Measurement of Business Data
c)Classification of Business Data
(d) Linear and Non-Linear Trend and its measurements
Nirbhay Mishra
Faculty,BBA
Purnea College Purnea
MB.- 8368660373