Economics

Q.

List five things you would like to do to conserve natural resources.

Q. Draw less than and more than ogive curves from the following data:

Marks	0−5	5−10	10−15	15−20	20−25	25−30	30−35	35−40
Number of Students	7	10	20	13	12	19	14	9

Q.

What do you mean by index number? Explain the types and uses of index numbers.

Q.

Calculate Laspeyre's and Paasche's price index number on the basis of the following data:

$\begin{array}{cccccc}\text{Commodity}& A& B& C& D& E\\ \text{Base Year Price}\left(p_0\right)& 10& 25& 30& 15& 20\\ \text{Curreny Year Price}\left(p_1\right)& 15& 40& 45& 30& 25\\ \text{Base Year Quantity}\left(q_0\right)& 6& 10& 15& 20& 8\\ \text{Current Year Quantity}\left(q_1\right)& 8& 20& 12& 15& 6\end{array}$

Q.

What are the 5 characteristics of perfect competition?

Q.

What were the main causes of India’s agricultural stagnation during the colonial period?

Q.

Calculate the rank correlation co-efficient between 'X' and 'Y' variables.

$\begin{array}{cccccccc}X& 10& 20& 35& 14& 18& 21& 16\\ Y& 15& 25& 18& 19& 20& 26& 27\end{array}$

Q.

Calculate Karl Pearson's coefficient of correlation by actual mean method:

$\begin{array}{cccccc}\text{Price (Rs)}& 10& 12& 14& 16& 18\\ \text{Quatity (Units)}& 20& 29& 21& 22& 28\end{array}$

Q. Calculate coefficient of correlation of the following data with rank difference and Karl Pearson's methods:

Economics (Marks)	77	54	27	52	14	35	90	25	56	60
Hindi (Marks)	35	58	60	46	50	40	35	56	44	42

Q.

Calculate the coefficient of correlation of the following data by Spearman's rank correlation method:

$\begin{array}{ccccccc}\text{X}& 19& 24& 12& 23& 19& 16\\ \text{Y}& 9& 22& 20& 14& 22& 18\end{array}$

Q.

Calculate the correlation coefficient between the heights of fathers in inches (X) and their sons (Y).

$\begin{array}{ccccccccc}X& 65& 66& 57& 67& 68& 69& 70& 72\\ Y& 67& 56& 65& 68& 72& 72& 69& 71\end{array}$

Q. Obtain the mean, median and mode of the following data:

Marks	0−10	10−20	20−30	30−40	40−50	50−60	60−70	70−80
Number of Students	5	7	15	25	20	15	8	5

Q.

Calculate the correlation coefficient between $X$ and $Y$ and comment on their relationship.

$\begin{array}{ccccccc}X& 1& 3& 4& 5& 7& 8\\ Y& 2& 6& 8& 10& 14& 16\end{array}$

Q.

What Are the 3 Basic Problems of Economics?

Q.

Find Karl Pearson's correlation coefficient if N = 50, $\sum X=75,\sum Y=80,\sum X^2=130,\sum Y^2=140$ and $\sum XY=128$.

Q. Calculate arithmetic mean from the following data by Short-cut Method:

Class Interval	20−25	25−30	30−35	35−40	40−45	45−50	50−55
Frequency	10	12	8	20	11	4	5

Q.

Discuss the importance of Statistics in Business.

Q.

Mention the importance or significance of correlation.

Q. Calculate coefficient of correlation of the age of husband and wife using Karl Pearson's method.

Husband (Age)	23	27	28	29	30	31	33	35	36
Wife (Age)	18	20	22	27	29	27	29	28	29

Q. Calculate arithmetic mean of the following frequency distribution:

Class	less than 10	10−20	20−30	30−40	40−50	50−60	more than 60
Frequency	5	12	18	22	6	4	3

Q.

You have unlimited wants and limited resources to satisfy them. Explain by giving two examples.

Q.

Find the mean deviation and coefficient of mean deviation from the following data

$\begin{array}{ccccccccc}X& 10& 12& 18& 23& 34& 45& 62& 75\end{array}$

Q. Calculate mode of the following series, using grouping method:

Size	40	44	48	52	56	60	64	68	72	76
Frequency	10	12	14	20	15	20	18	10	8	4

Q.

Differentiate between inclusive and exclusive series.

Q. Calculate the median and mode from the following data:

Marks	0−10	10−20	20−30	30−40	40−50	50−60	60−70	70−80
Number of Students	2	18	30	45	35	20	6	3

Q. Calculate mode of the following distribution:

Marks	10−19	20−29	30−39	40−49	50−59	60−69	70−79	80−89	90−99
Number of Students	29	87	181	247	263	133	40	9	2

Q. Using assumed average in Karl Pearson's formula, calculate coefficient of correlation, given the following data:

X	78	89	97	69	59	79	68	61
Y	125	137	156	112	107	106	123	138

Q.

What is the difference between Small Scale And Large Scale Industries?

Q.

Explain any 3 merits and demerits each of arithmetic mean.

Q.

Calculate the cost of living index number from the following data :