Explain the following:

a. Non sampling errors
b. Probability density curve
c. Type I and type II errors
d. Conjoint Analysis

b.) What are the various sources of Secondary data? 

b.) A random sample of 100 recorded deaths in India during the past year showed an average life span of 71.8 years with a standard deviation of 8.9 years. Does this seem to indicate that the average life span today is greater than 70 years? Use a 0.05 level of significance.

(a.) A market research firm wants to estimate the share that foreign companies have in
Indian market for certain products. A random sample of 100 consumers is obtained and
34 people in the sample are found to be users of foreign made products, the rest are users
of domestic products. Give a 95% confidence interval for share of foreign products in the
market.

(b) A salesman made a profit of Rs. 245 on a showpiece A for which average profit has
been Rs. 200 with a standard deviation of Rs. 50. Later on the same day, he made a profit
of Rs. 620 on a showpiece B for which the average profit has been Rs. 500 with a
standard deviation of Rs. 150. For which of these two models is the salesman’s profit
relatively higher.

Differentiate between:

a. Quantitative and Qualitative Research
b. Phenomenology and Ethnography
c. Techniques of univariate data analysis
d. ANOVA and MANOVA

a.) Discuss different measures of Central Tendency and the specific situation in which they could be used.

b.) Marks of 20 students in Economics are: 70, 60, 80, 50, 65, 78, 81, 69, 72, 77, 58, 42, 62, 55, 82, 84, 64, 75, 59, 66 (Maximum marks are 100). Find the percentage of marks of each student. Also find out mean, median and mode using spreadsheet package. (Enclose screenshots of the spreadsheet in the assignment)