Q. 1. Distinguish between 'primary data' and 'secondary data'. Which data is more reliable and why?
Q. 2. What are the various methods of collecting primary data? Explain any one method along with its
merits and demerits.
Q.3. Discuss the published sources of secondary data.
Q.4. Write short notes on: (i) Census of India; (ii) National Sample Survey Organisation.
Q.5. Discuss the precautions to be considered while making use of the secondary data.
Q. 6. What do you mean by a questionnaire? Discuss the principles which should be followed while
drafting a good questionnaire?
Q. 7. What do you mean by census method? Give its merits and demerits.
Q. 8. What is the meaning of sampling method? Briefly discuss the merits and demerits of sampling
method.
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Answer:
Primary Data Secondary Data
Reliability and Suitability
Primary data are more reliable and suitable for the enquiry because it is collected for a particular purpose. It is less reliable and less suitable as someone else has collected the data which may not perfectly match our purpose.
Answer:
(2) Time-consuming This method is time-consuming as investigator personally visits the various places and meet different people to collect information.
3) Secondary data is usually gathered from the published (printed) sources. A few major sources of published information are mentioned below: Published articles of local bodies and Central and State Governments. Statistical synopses, census records and other reports issued by different departments of the Government.
4) National Sample Survey Organisation (NSSO) is the largest and a very prominent agency of India working for the collection of data on various economic variables such as education,health,literacy rates, etc. ... Census of India is responsible for the collection of data related to different demographic characteristics.
5)The investigator must ensure that the data are suitable for the purpose of enquiry. 2. Inadequate Data: Adequacy of the data is to be judged in the light of the requirements of the survey as well as the geographical area covered by the available data.
6)The principles to be followed while drafting questionnaire are: 1) The questionnaire must not contain many questions, as greater the questions, lesser will be the possibility of reply from respondents. 2) The questions should be brief and clear. 3) The questions should be arranged in a logical order.
7) Reliable and Accurate: Results based on census method are accurate and highly reliable. This is because each and every item of the population is studied. Less Biased: Results based on census method are less biased. It is because of the absence of investigator's discretion regarding the selection of sample items.
8) It allows us to get near-accurate results in much lesser time. When you use proper methods, you are likely to achieve higher level of accuracy by using sampling than without using sampling in some cases due to reduction in monotony, data handling issues etc.
Step-by-step explanation:
this is the correct answer you want
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1. Primary data is much more reliable than secondary data. This is because primary data gives up-to-date information about a topic and is collected by doing research, avoiding the use of secondary sources which may include false and not up-to-date information.
2. The most common methods of collecting primary data are interviews, field observations, self-administered surveys, and experiments.
The experimental method:
merits:
-the researcher can have control over variables
-gains insight into methods of instruction
-can be used to determine what's best for the population
demerits:
-sample may not be representative
-human response can be difficult to measure
-subject to human error
---------------
5. Some precautions that should be considered when using secondary data are:
Reliable agency:
-must ensure that the agency that has published the data should be reliable
Method of collecting data used:
-The investigator should also be aware of the method that was used in collecting the data
-Sampling method may be biased depending upon the mode of selection of samples.
-All these should be ascertained before making use of the secondary data.
Suitability for the purpose of an enquiry:
-The Investigator must ensure that the data are suitable for the purpose of the present enquiry.
-The suitability of the data is determined by investigating the nature, objectives, time of collection, etc. of the secondary data.
Adequacy and accuracy to avoid the impact of bias:
-It is necessary to use adequate data to avoid biases and prejudices leading to incorrect conclusions.
---------------
Sorry, I didn't answer all of your questions, but I hope this helps.
HELPP PLS it’s literally almost due
A require 2/3 cup of sugar to make a cake what is maximum number of cakes that can be made using 1/2
Answer:
0 cakes
Step-by-step explanation:
1/2 is 0.5 cups.
2/3 cups is roughly 0.67.
If it requires 0.67 cups of sugar and you have 0.5 cups, you don't have enough for a single cake.
ang answer jan ay .............stick o
Evaluate a = 6, b = 5, c = 9 a*b*c/2 + 2(a*b*c) = ?
Answer:
675
Step-by-step explanation:
Answer:
675
Step-by-step explanation:
plug in the #'s
6*5*9/2 +2(6*5*9)
6*5*9=270
270/2=135
135+2(270)
135+540
675
Find the value or measure. Round answers to the nearest tenth, as needed.
Answer:
its 34
Step-by-step explanation:
its half of the center angles
Categorize each example based on whether it shows citizens exercising their rights or fulfilling their responsibilities.
Joseph and his family observe
Lent and go to church every
Sunday.
Kit organized a march to
peacefully protest against
deforestation.
Amy held a fundraiser to
money for her area’s
Help a Child charity.
Answer:
I took the test and got it right
Rights are
Joseph and his family observe Lent and go to church every Sunday. Kit organizes a march to peacefully protest against deforestation.
Responsibilities is
Amy held a fundraiser to money for her area's Help a Child charity.
The point (-3, 2) is on the line given by which equation below?
HELPPP ME PLSSSS I NEED THIS NOWW
PLEASE EXPLAIN IT IS SUPER DUPER URGENT Explain how to find the area of a triangle if the height of the triangle is 24 ft and the base of the triangle is 8 ft. Please use complete sentences and mathematical words. Minimum of 5 sentences.
Answer:
You have to multiply 24 and 8, which will give you 192. For a triangle, you always must divide by two, and doing so on this equation will give you 96. Like everything involving area, or something with a measurement, you must use the proper measurement unit, in this case that would be feet. In all, the answer is 96 feet for the overall area of the triangle. The formula for this process is A=[tex]\frac{hb}{2}[/tex]
Step-by-step explanation:
Answer:
Step-by-step explanation:
This is how you find the area of a triangle. First, you must use the formula
A= 1/2 b·h. Replace the given informations. (the steps will be on a drawing so you will be able to understand how to solve.)
Anna earns $60 plus $2.50 for each table she cleans. Write and solve an inequality to find how many tables she must clean to earn at least $150
Answer:
84.5
Step-by-step explanation:
65.50 she will need 84.5 which is 84 dollard and 50 ct
Neveah orders a square pizza. 34 34 of the pizza has pepperoni. 23 23 of the pepperoni also has green peppers. How much of the whole pizza has both pepperoni and green peppers
Answer:
1/2
Step-by-step explanation:
Given that:
3/4 of pizza has pepperoni
2/3 of the pizza with pepperoni has green pepper ;
The fraction of the whole pizza that has both pepperoni and green pepper ;
Fraction with pepperoni = 3/4
Fraction of whole with green pepper and pepperoni : 2/3 of 3/4 = 2/3 * 3/4 = (2*3) / (3*4) = 6/12 = 1/2
The fabric is $3 times the number of yards of fabric n. Which equation gives the total cost c of n yards of fabric
Answer:
C = 3n
Step-by-step explanation:
Given that,
The fabric is $3 times the number of yards of fabric n.
We need to find an equation that gives the total cost c of n yards of fabric.
It means, the total cost of n yards of fabric is given by :
C = 3n
Where
n is yards of fabric.
Only questions 2, 3, 6, 11, 12, 13 fifth grade
Answer:
zoo wee mama
Step-by-step explanation:
2-8.172 3-172 r1 6-1.04 11-5/2 12-1 1/2 13-16 1/3 yw!
Please help me find the answer.
Answer:
I think 3/6
Step-by-step explanation:
because there is 6 cards and 3 of them are odd but im not postive
What expression has the same meaning as 2 7/4
Step-by-step explanation:15/4 also means 2 7/4 if that's what you mean.
Answer:
it s b) 4 2 the power of 7
Step-by-step explanation:
solve attached problem
Answer:
what is the dot for?
Step-by-step explanation:
If one figure is translated, rotated and dilated to create its image, the two figures will be __________ .
Group of answer choices
translation
congruent
similar
opposite
PLEASE ANSWER ASAP
Whích type of transformation is shown here?
A)
dilation
B)
reflection
rotation
D)
translation
E)
refraction
Answer:B.rotation
Step-by-step explanation:
A swimming pool is treated periodically to control harmful bacteria growth.
The concentration of bacterial per cm³ after t days is given by
C(t)
[tex] = 30t^2 -240t + 500 [/tex]
in how many days after a treatment will be concentration be minimal ?
Answer:
The answer is 4
Step-by-step explanation:
[tex]c \: (t) = {30ft}^{2} = - 240t + 500[/tex]
For a quadratic function as given to find the minimum you need to write it in vertex or find the vertex (the vertex in a quadratic function is thr maximum or minimum).
Use the next formula to find the t coordinate of the vertex (the time in the minimum concentration of bateria):
[tex]c \: (t) = {at}^{2} + bt + c \\ \\ tm = - \frac{b}{2a} [/tex]
For the given function:
[tex]tm = - \frac{ - 240}{(2)30} = \frac{240}{60} = 4[/tex]
The minimum concentration of bacteria will be after 4 days.
3. F (7,-2). If F is rotated 90 degrees about the origin. What are the
coordinates of F?
Well you said the Coordinates of F (7,-2) rotated 90 degrees
Hi! Can someone help me on this problem?
Answer:
64 or 4x4x4
Step-by-step explanation:
4x4x4=64
plz mark brainliest
Answer:
it is B and D
Step-by-step explanation:
someone deleted my answer and you are just an a.ss
What is the measure of an angle that is the complement of angle A?
A. 135
B. 5
C. 45
D. None of the above
E. 55
write as a single fraction in their
lowest terms:
2/x + 1/x-3
Answer:
[tex]\frac{3x-6}{x(x-3)}[/tex]
Step-by-step explanation:
We require the denominators of the fractions to be common.
Multiply numerator/denominator of first fraction by x - 3
Multiply numerator/denominator of second fraction by x
Then
= [tex]\frac{2(x-3)}{x(x-3)}[/tex] + [tex]\frac{x}{x(x-3)}[/tex] ( simplify numerators, leaving the common denominator
= [tex]\frac{2x-6+x}{x(x-3)}[/tex]
= [tex]\frac{3x-6}{x(x-3)\\}[/tex]
If the radius of a circle is 10cm, what will be the area of the circle?
Answer:
314
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
She needs to sell 15 boxes of cookies to reach her goal
A fair dice is rolled
Work out the probability of getting a multiple of 2.
Give your answer in its simplest form.
Answer:
1/2
Step-by-step explanation:
you could get 2 or 4 or 6
4). A coin is tossed and a number cube is rolled. Find the probability, p(heads and 7)
the absolute value |x-3|<1
Answer:
in kiloliters its 0.0035
Your stock is worth $50 in 2010. Each year the value increased by 5%. Write a function to
model this situation. Use y to represent the value of the stock and x to represent the number of years since 2010
Answer:
It adds by +5
Step-by-step explanation:
Help pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
Answer:
21
Step-by-step explanation:
Answer: Our required answer is 11(2c+3d)
Step-by-step explanation:
Since we have given that
22c + 33d.
We have to use "Distributive property" to factor out the greatest common factor.
Since we know that 11 is the greatest common factor of 22 and 33.
So, it becomes,11(2c+3d)
Hence, our required answer is 11(2c+3d)
x puᴉɟ oʇ ǝʌɐɥ noʎ
[tex] \frac{x {}^{2} }{5 {}^{2} } = {4}^{2} [/tex]
Hello there! The value of x is 20 or -20
"20 or - 20" is one answer so you are supposed to answer 20 or -20, not choose only one.
Step-by-step explanation:
[tex] \large{ \frac{ {x}^{2} }{ {5}^{2} } = {4}^{2} }[/tex]
First, we simplify 5² and 4²
[tex] \large{ \frac{ {x}^{2} }{25} = 16}[/tex]
Multiply the whole equation by 25 to get rid of the denominator.
[tex] \large{ \frac{ {x}^{2} }{25} (25) = 16(25)} \\ \large{ {x}^{2} = 400}[/tex]
Square both sides and solve the equation.
[tex] \large{ \sqrt{ {x}^{2} } = \pm{ \sqrt{400} }}[/tex]
Also don't forget to write "plus or minus" symbol when we are solving a quadratic equation by squaring both sides.
[tex] \large{x = \pm{20}}[/tex]