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2023-03-17 21:40:32 SAMPLING METHODS IN RESEARCH

1. Probability sampling
2. Non-probability sampling

1.Probability sampling

It is a method of selecting a sample from a population in which each member of the population has a known, non-zero probability of being selected.

This method is considered to be more objective and systematic, and it allows for the calculation of sampling errors.

There are several categories of probability sampling:

A. Simple Random Sampling:

This is the most basic form of probability sampling, in which every member of the population has an equal chance of being selected.

A common method of selecting a simple random sample is through the use of a random number generator.

B. Stratified Random Sampling:

This is a method of probability sampling in which the population is divided into smaller subgroups or strata, and a simple random sample is drawn from each stratum.

This method is used when the population is heterogeneous and the researcher wants to ensure that the sample is representative of the different subgroups.

C. Cluster Sampling:

This is a method of probability sampling in which the population is divided into smaller groups or clusters, and a random sample of clusters is selected.

All members of the selected clusters are then included in the sample.

This method is used when the population is dispersed and it is difficult or expensive to obtain a complete list of all members of the population.

D. Systematic Sampling:

This is a method of probability sampling in which members of the population are selected at fixed intervals.

For example, every tenth member of a list of all members of a population might be selected for the sample.


2. Non-probability sampling

It is a method of selecting a sample from a population in which the probability of selection is not known.

This method is considered to be less objective and systematic and it does not allow for the calculation of sampling errors.

There are several categories of non-probability sampling:

A. Convenience Sampling:

This is a method of non-probability sampling in which the sample is selected based on the availability or convenience of the participants.

For example, a researcher might conduct a study on a group of students in a classroom because they are readily available.

B. Quota Sampling:

This is a method of non-probability sampling in which the sample is selected based on predetermined quotas for certain characteristics of the population.

For example, a researcher might set a quota for a certain number of participants from each age group in a study.

C. Snowball Sampling:

This is a method of non-probability sampling in which the sample is selected based on referrals from initial participants.

For example, a researcher might start with a small group of participants who are willing to participate in a study and then ask them to refer other people who fit the same criteria.

D. Purposive Sampling:

This is a method of non-probability sampling in which the sample is selected based on specific criteria or characteristics. For example, a researcher might conduct a study on a specific group of people, such as patients with a certain condition. ክፈት / አስተያየት ይስጡ

2023-03-14 05:16:55 Akkam jirtuu Gaaffillee exist exam isiin gargaaran kanneen ilaalaa! Hiriyoota keesssaniif qoodaa! Which of the following is an example of a direct cost?
a) Rent for the production facility
b) Office supplies for the accounting department
c) Wages for factory workers
d) Salaries for the marketing department

Which of the following is an example of a variable cost?
a) Rent for the production facility
b) Depreciation of equipment
c) Property taxes on the factory building
d) Cost of raw materials

Which of the following is an example of a fixed cost?
a) Direct labor
b) Raw materials
c) Rent for the production facility
d) Shipping costs

Which of the following is NOT a component of cost-volume-profit analysis?
a) Selling price per unit
b) Total fixed costs
c) Variable cost per unit
d) Cost of goods sold

Which of the following is an example of a sunk cost?
a) The cost of purchasing a new machine
b) The cost of raw materials for a production run
c) The cost of training employees on a new software system
d) The cost of a failed marketing campaign

Which of the following is an example of an opportunity cost?
a) The cost of purchasing a new machine
b) The cost of raw materials for a production run
c) The potential revenue from a lost customer
d) The cost of employee salaries

Which of the following is an example of a relevant cost?
a) The cost of a machine purchased five years ago
b) The cost of raw materials for a product that is no longer produced
c) The cost of overtime wages for a special order
d) The cost of general overhead expenses

Which of the following is an example of a nonfinancial performance measure?
a) Return on investment
b) Net income
c) Customer satisfaction ratings
d) Gross margin percentage

Which of the following is an example of a responsibility center?
a) The entire organization
b) A single department within the organization
c) The CEO of the organization
d) The organization's board of directors

Which of the following is an example of a capital expenditure?
a) The purchase of office supplies
b) The purchase of a new computer for an employee
c) The construction of a new production facility
d) The cost of raw materials for a production run

Answers:

c) Wages for factory workers
d) Cost of raw materials
c) Rent for the production facility
d) Cost of goods sold
d) The cost of a failed marketing campaign
c) The potential revenue from a lost customer
c) The cost of overtime wages for a special order
c) Customer satisfaction ratings
b) A single department within the organization
c) The construction of a new production facility ክፈት / አስተያየት ይስጡ

2023-03-11 04:18:53 Sampling Techniques
***********************
Probabilistic Sampling Techniques:
Simple Random Sampling:
This method involves selecting a random sample from a larger population in a way that every member of the population has an equal chance of being selected. For instance, using a random number generator to select names from a list.
Stratified Sampling:
This method involves dividing a population into subgroups or strata based on specific characteristics (e.g., age, gender, location, etc.) and then selecting a sample from each stratum. This helps to ensure that each subgroup is well represented in the sample.
Systematic Sampling:
This method involves selecting every nth member of a population after randomly selecting a starting point. For example, if you need a sample of 100 from a population of 1000, you could randomly select a starting point between 1 and 10 and then select every 10th person thereafter.
Cluster Sampling:
This method involves dividing a population into clusters or groups based on geographical location or other similar characteristics, then randomly selecting a few clusters and collecting data from all members of those selected clusters.
Non-Probabilistic Sampling Techniques:
Convenience Sampling
This method involves selecting the sample based on convenience or availability, without regard to the representativeness of the sample. For example, a researcher might survey the first 50 customers who walk into a store, without any other considerations.
Quota Sampling:
This method involves selecting a sample that meets certain predetermined criteria, such as a certain number of people from different demographic groups. This method is often used in market research and opinion polls.
Purposive Sampling:
This method involves selecting a sample based on specific criteria or characteristics that the researcher is interested in. This method is often used in qualitative research, where the researcher wants to study a specific group or phenomenon.
Snowball Sampling:
This method involves selecting a few individuals who meet certain criteria and then asking them to refer other individuals who also meet those criteria. This method is often used when the population of interest is difficult to locate or contact, such as drug users or homeless people.
#research #sampling #probability ክፈት / አስተያየት ይስጡ

2023-02-26 23:48:20 For University students!!!



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ክፈት / አስተያየት ይስጡ

2023-02-03 22:03:58 Hooteellii Jarman Adaamaa carraa hojii hedduu qabaa. ilaalaa!!!!! የድርጅት ስም፡ አዳማ ጀርመን ሆቴል

ማብቅያ ቀን፡ 1-06-2015

አድራሻ ፡ አዳማ ጀርመን ሆቴል

0910262028/ 0221127320

1.ሙያ፡ ምግብ አዘጋጅ

ልምድ፡ 1 ዓመት

ፆታ: ሴት

የተፈላጊ ብዛት፡ 4

# የት/ት ደረጃ፡ በሆቴል ማኔጅመንት ወይም ተመሳሳይ ዘርፍ ያጠናቀቀች
# የመመዝገብያ ቦታ፡ በሆቴሉ ቅጥር ግቢ ውስጥ ቢሮ ቁጥር:5

2.ሙያ፡ ባህላዊ ምግብ አዘጋጅ

ልምድ፡ 1 ዓመት

ፆታ: ሴት

የተፈላጊ ብዛት፡ 4

# የት/ት ደረጃ፡ በሆቴል ማኔጅመንት ወይም ተመሳሳይ ዘርፍ ያጠናቀቀች
# የመመዝገብያ ቦታ፡ በሆቴሉ ቅጥር ግቢ ውስጥ ቢሮ ቁጥር:5

3.ሙያ፡ ካሸር

ልምድ፡ 1 ዓመት

ፆታ: ሴት

የተፈላጊ ብዛት፡ 4

# የት/ት ደረጃ፡ በአካውንቲንግ Level IV ወይም ዲግሪ ያለው/ያላት
# የመመዝገብያ ቦታ፡ በሆቴሉ ቅጥር ግቢ ውስጥ ቢሮ ቁጥር:5

4.ሙያ፡ እንግዳ ተቀባይ

ልምድ፡ 1 ዓመት

ፆታ: ሴት

የተፈላጊ ብዛት፡ 2

# የት/ት ደረጃ፡ በአካውንቲንግ ወይም ተመሳሳይ ፊልድ Level IV ወይም ዲግሪ ያለው/ያላት

5.ሙያ፡ ላውንደሪ

ልምድ፡ 1 ዓመት

ፆታ: ሴት

የተፈላጊ ብዛት፡ 2

# የት/ት ደረጃ፡ 10ኛ ክፍል እና ከዚያ በላይ ክፈት / አስተያየት ይስጡ

2023-02-02 03:59:36 Raacha akka nyaatuu maatii keen osoo ajajamtee maal taata? nyaachuun dirqama yoo ta'ee guddaa irraa irraa eegalii. #34 #Olmaa_Gaarii_Qabaadhaa https://t.me/ergaabarii_morningtune https://t.me/ergaabarii_morningtune https://t.me/ergaabarii_morningtune ክፈት / አስተያየት ይስጡ

2023-02-01 20:17:52 Barsisoota 10 Digrii fi isaa ol qaban ilaallaa ሙያ፡ መምህር

የድርጅት ስም፡ ሰለሞን አካዳሚ

ማብቅያ ቀን፡ 28-05-2015

አድራሻ ፡ ደካ አዲ ተክለሃይማኖት አደባባይ(07) የቀድሞ ሃርሜ ት/ት ቤት

ልምድ፡ 0 ዓመት

ፆታ: ሁለቱም

የተፈላጊ ብዛት፡ 10

# የት/ት ደረጃ፡ ዲፕሎማ ወይም ዲግሪ በቋንቋ (አማርኛ እና እንግሊዘኛ)፣ በሳይንስ
# ልምድ ያለው/ያላት ቢሆን ይመረጣል
# አማርኛ እና ኦሮምኛ መናገር እና መፃፍ የምትችል ክፈት / አስተያየት ይስጡ

2023-01-30 21:22:40 Maal Gochaa jirta?

Jireenyi kee akka jijjiirramu yoo barbaadde dursa ilaalcha kee jijjiiruun, Dadhabbii milkaa'inni qabu danda'uu qabda. Osoo jaalalli si qabee nama sanitti bareeduf (of harkaan gahuuf) wanti ati hin taane hin jiruum bar. Uffata dhabdullee namarraa fuute uffattee bira deemta. Sa'aatii 5:00tti kan wal argitan yoo ta'e osoo sa'atii Shan hin ta'in dhaqxee achi jaajjita. Wanta nama ajaa'ibu hanga sa'aatin siif gahutti si muddaam bar. Nama jaalattu san argachuf kan akkas goote, iddoo yaadde gahuuf hoo maal faa gochaa jirta?

Gama jireenya keetitiinis ilaalchaa kee jijjiirun; haala fayyadama yeroo, oolmaa kee, haala qabiinsa qarshii keetii yoo sirreessite wanti kamiiyyu ofiif gara kee dhufa.

halkan bareedduu isiniif hawweera
Daawwitii Milkaa'inaa ክፈት / አስተያየት ይስጡ

2023-01-29 10:38:14 kitaaboota qo'annoo fi qorannoo linkii kana join godhaa irraa dubbisaa. https://t.me/research4all ክፈት / አስተያየት ይስጡ

2023-01-29 10:37:40 https://t.me/research4all ክፈት / አስተያየት ይስጡ