NMIMS 2nd sem assignment Business Statistics

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NMIMS Global Access

School for Continuing Education (NGA-SCE)

Course: Business Statistics

1. The sample data from a research survey conducted in various cities on the amount of time 13-15 year-old children spent with mobiles are as follows:

City	Time with mobiles (hours per week)
Hyderabad	46
Mumbai	50
Pune	46
Bangalore	54
Bhubneshwar	42
Indore	30
Bhopal	42
New Delhi	50
Chandigarh	46

For the above sample, determine the following measures:

      i.        The mean

    ii.        The standard deviation

   iii.        The mode

   iv.        The 75th percentile

Based on your calculations comment on the time spent on mobile. (10 Marks)

Solution:

a. The mean

Mean can be calculated by sum of all number / total numbers.

2. ‘Mumbai Ice Cream an ice cream store gives relationship between ice cream sold and temperature. The store has taken a sample of a week’s data. Below you are given the results of the sample.

Day	Cones Sold	Temperature
1	350	110
2	200	100
3	210	90
4	100	80
5	80	70
6	70	60
7	50	50

i. Which variable is the dependent variable?

Solution: Here the dependent variable is Ice Cream cone Sold as its depend on the temperature. When temperature Increase number of Ice cream cones sold increases

3. According to one of the recent study conducted by an academic researcher on international placement of students from leading institutes in India there is a high variation in the salary offered by institutes. The following details have been gathered from the placement institute of the colleges. The researcher wants to understand the trends with regard to international placement based on the data he has gathered.

Amount (in USD in lakhs per annum )	Age	Marital Status	Type of institute	Gender
2	35	Single	University	Male
5	24	Married	PGDM	Male
3.5	29	Married	University	Female
5	26	Single	University	Male
4	26	Married	PGDM	Female
8	25	Single	PGDM	Female
15	34	Married	PGDM	Male
3	26	Single	PGDM	Male
7	23	Single	PGDM	Male

a. Using descriptive statistics explore salary, and identify factors that appear to influence the amount of the salary received. (5 Marks)

Solution: Descriptive statistics are ways of summarizing large sets of quantitative (numerical) information.  If we have a large number of measurements, the best thing we can do is to make a graph with all the possible scores along the bottom (x axis), and

Complete Assignment available for NMIMS

in rs 250 per assignment only

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