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The options contain four Lorenz curves indicating the wealth distribution for four countries. In which of the following cases is the wealth distribution the most uniform?

What are
the basic elements of the survey method? What is chief advantage of
this method?

The diameters of circles (in mm) drawn in a design are given below :

$\begin{array}{cccccc}\text{Diameters}& 33-36& 37-40& 41-44& 45-48& 49-52\\ \text{No. of circles}& 15& 17& 21& 22& 25\end{array}$

Calculate the standard deviation and mean diameter of the circles.

A tuning fork makes 256 vibrations per second in air. When the velocity of

sound is 330 m/s, then wavelength of the tone emitted is

[KCET 1994; AFMC 1998;MH CET 1999; CBSE PMT 1999]

Out of Range, Quartile Deviation, Mean Deviation and Standard Deviation, which one suits the best in terms of following Parameters:

(i) Ease of Calculation

(ii) Based on all the items

(iii) Less effect of Extreme Items

Discuss the SQL view method of creating a query?

1. 25.86

Certain words in the poem are in capital letters — why?

Production of goods in the non-market activities are used for which of the following terms listed below?

There were 80 people on a trip organised by a school, out of which 60 were students, 14 were teachers and 6 (all males) were peons. Out of the total number of people, 16 were females including one female teacher. Raj, a student representative, tried to recreate this into a table. However, he is missing information in cells x,y and z on the table.

$\begin{array}{cccc}\text{Tourists}& \text{Male}& \text{Female}& \text{Total}\\ \text{Students}& \text{X}& 15& 60\\ \text{Teachers}& 13& 1& 14\\ \text{Peons}& 6& \text{Y}& 6\\ \text{Total}& \text{Z}& 16& 80\end{array}$

Complete the table for Raj.

The mean standard deviation of marks obtained by 50 students. of a class in three subjects, Mathematics, Physics and Chemistry are given below : $\begin{array}{cccc}\text{Subject}& \text{Mathematics}& \text{Physics}& \text{Chemistry}\\ \text{Mean}& 42& 32& 40.9\\ \text{Standard deviation}& 12& 15& 20\end{array}$

Which of the three subjects shows the highest variability in marks and which shows the lowest ?

Rectify the following errors

(i) Credit sales to Mohan Rs. 7,000 were recorded as Rs. 700.

(ii) Credit purchase from Rohan Rs. 9,000 were recorded as Rs. 900.

(iii) Goods returned to Rakesh Rs. 4,000 were recorded as Rs. 400.

(iv) Goods returned from Mahesh Rs. 1,000 were recorded as Rs. 100.

(v) Furniture purchased on credit from kartik for Rs. 60,000 posted as Rs. 6,000.

(vi) Furniture purchased on credit from Kartik for Rs. 60,000. posted to Jatin's account.

(vii) Furniture purchased on credit from Kartik for Rs. 60,000 posted to machinery account.

Find the covariance for the following demand schedule.

$\begin{array}{cc}Price\left(X\right)& Quantity\left(Y\right)\\ 5& 40\\ 10& 33\\ 15& 30\\ 20& 28\\ 25& 19\end{array}$

The median for grouped data is found by using the formula:

John is presented with a table as shown below and is expected to graphically represent it. Which diagram would be most suited for the situation?

$\begin{array}{ccc}\text{Year}& \text{Birth Rate}& \text{Death Rate}\\ 1971-1980& 46& 36\\ 1981-1990& 45& 31\\ 1991-2000& 40& 27\\ 2001-2010& 32.5& 11.5\\ 2011-2018& 22.5& 7.3\end{array}$

Describe
the limitations of psychological enquiry.

Which of the following plots show a strong negative correlation?

The base for given base method multiplication is:

___

Calculate the weighted aggregative index number for the following considering the current period consumption as a standard:

$\begin{array}{ccccc}& P_0& Q_0& P_1& Q_1\\ A& 1& 12& 3& 15\\ B& 6& 10& 8& 11\\ C& 3& 9& 4& 7\\ D& 12& 15& 19& 20\\ E& 8& 25& 13& 18\end{array}$

All the prices are in dollars.

The demand for a good at different price points is given in the below. Find the correlation coefficeint between price and quantity demanded.

$\begin{array}{cc}\text{Price (P)}& \text{Quantity (Q)}\\ 10& 120\\ 20& 105\\ 30& 85\\ 40& 55\\ 50& 40\end{array}$

Differentiate between chronological and spatial classification. Construct an imaginary table based on spatial classification.

‘Social responsibility is burden on consumer’. Describe the statement.

The following table contains the data of monthly salaries and percentage of the income saved. Find the correlation coefficient using the shortcut method.

$\begin{array}{cc}Salary& \%ofincomesaved\\ 10000& 5\\ 20000& 8\\ 30000& 10\\ 40000& 12\\ 50000& 20\end{array}$

Identify the domain and range of the function f(x), defined in N, as below:

Find out standard deviation, given the following data:

8, 10, 12, 14, 16, 18, 20, 22, 24, 26

The following results show the number of workers and the wages paid to them in two factories A and B.

$\begin{array}{ccc}\text{Factory}& \text{A}& \text{B}\\ \text{Number of workers}& 4000& 5000\\ \text{Mean wages}& Rs3500& Rs3500\\ \text{Variance of distribution of wages}& 64& 81\end{array}$

Which factory has more variation in wages?

Steven Gerrard, arguably one of the most consistent and skilled players in the English premier league was given the following monthly ratings by a football website for the past 40 months.

$\begin{array}{ccccccc}Rating& 6& 8& 8.5& 9& 7& 10\\ Numberofmonthswiththerating& 2& 8& 10& 7& 8& 5\end{array}$

Calculate the mean deviation about mean for his ratings.

The median for the data is

$\begin{array}{cccccccc}\text{IQ}& 60-70& 70-80& 80-90& 90-100& 100-110& 110-120& 120-130\\ \text{No. of pupils}& 2& 3& 5& 16& 14& 13& 7\end{array}$

Q9. Match the following indices with their publishers:

Index

i. WPI

ii. CPI combined

iii. GDP Deflator

iv. CPI-Industrial Workers

Published by

1. Labour Bureau

2. Office of Economic Advisor

3. CSO

The mean of a set of $30$ observations is $75$. If each observation is multiplied by a non-zero number $\lambda$ and then each of them is decreased by $25$, their mean remains the same. Then $\lambda$ is equal to :

State any three differences between e-business and traditional business.

Telephone survey is the most suitable method of collecting data, when the population is literate and spread over a large area (true/false).