DBB2102 BBA QUANTITATIVE TECHNIQUES FOR MANAGEMENT

Description

SESSION	FEB – MAR 2025
PROGRAM	BBA
SEMESTER	III
COURSE CODE & NAME	DBB2102 QUANTITATIVE TECHNIQUES FOR MANAGEMENT

 

 

 

Assignment Set – 1

 

 

 

Q1  Elaborate on the characteristics of Statistics. 

Ans 1.

Introduction to Statistics

Statistics is a branch of mathematics that deals with the collection, classification, analysis, interpretation, and presentation of numerical data. In the context of management, statistics is a critical tool used for informed decision-making, forecasting, and strategic planning. It simplifies complex data and helps managers draw logical conclusions from it.

Quantitative Nature of Statistics

One of the fundamental

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Q2  Explain  the  methods  of  mean,  median  and  mode  for frequency data.

Ans 2.

Introduction to Central Tendency in Frequency Data

In statistics, measures of central tendency are used to summarize a set of data with a single value that represents the center or average. The three main measures—mean, median, and mode—are especially useful when dealing with frequency distributions, where data is grouped in intervals and associated with frequencies. These

 

Q3 The values of X and Y are given below:

 

X   1   3   5   7   9

 

Y   9   7   5   3   1

 

Calculate the correlation coefficient between X and Y.

 

Ans 3.

To calculate the correlation coefficient (r) between two variables  and , we use Pearson’s correlation coefficient formula.

Step 1: Write the Given

 

 

 

Assignment Set – 2

 

 

Q4 The data below shows weekly sales: Week    

Sales (Units)

 

Week 1   50

 

Week 2   55

 

Week 3   53

 

Week 4   54

 

Week 5   56

 

Week 6   58

 

Calculate the 3 – week  moving average.

 

Ans 4.

Given Weekly Sales Data:

Week	Sales (Units)
Week 1	50
Week 2	55
Week 3	53
Week 4	54
Week 5	56
Week 6	58

 

What is a 3-

Q5 Explain different methods of random sampling.

Ans 5.

Random Sampling

Random sampling is a fundamental technique used in statistics to select a sample from a larger population in such a way that every individual has an equal chance of being chosen. It helps in obtaining unbiased and representative data, which leads to more accurate and generalizable results in research and decision-

 

 

Q6 Define different methods for statistical quality control. Also, describe the advantages of statistical quality control.

Ans 6.

Statistical Quality Control (SQC)

Statistical Quality Control (SQC) refers to the use of statistical methods to monitor and control the quality of products and processes. It involves collecting data from production processes and using statistical tools to identify, analyze, and correct variations in quality. SQC helps businesses maintain consistent product standards