## How do you select a research problem?

Selecting a Topic

- brainstorm for ideas.
- choose a topic that will enable you to read and understand the literature.
- ensure that the topic is manageable and that material is available.
- make a list of key words.
- be flexible.
- define your topic as a focused research question.
- research and read more about your topic.

## How do you write a problem statement in a case study?

How to write a problem statement

- Describe how things should work.
- Explain the problem and state why it matters.
- Explain your problem’s financial costs.
- Back up your claims.
- Propose a solution.
- Explain the benefits of your proposed solution(s).
- Conclude by summarizing the problem and solution.

## How do you select a random sample?

There are 4 key steps to select a simple random sample.

- Step 1: Define the population. Start by deciding on the population that you want to study.
- Step 2: Decide on the sample size. Next, you need to decide how large your sample size will be.
- Step 3: Randomly select your sample.
- Step 4: Collect data from your sample.

## What steps should be taken to select a sample?

Steps in Sampling Process

- Defining the target population.
- Specifying the sampling frame.
- Specifying the sampling unit.
- Selection of the sampling method.
- Determination of sample size.
- Specifying the sampling plan.
- Selecting the sample.

## How do you design a sample?

For example, if the sampling frame consists of a list of every unit, together with its address, in the population of interest, and if a mail survey is to be conducted, then a simple list sampling would be appropriate; for example, the sample design is to have a sampling interval of 10 (select every 10th unit) from the …১ জানু, ২০১১

## How do you solve stratified sampling?

To implement stratified sampling, first find the total number of members in the population, and then the number of members of each stratum. For each stratum, divide the number of members by the total number in the entire population to get the percentage of the population represented by that stratum.৪ মার্চ, ২০১৩

## Why do we use stratified sampling?

Stratified random sampling allows researchers to obtain a sample population that best represents the entire population being studied. Stratified random sampling involves dividing the entire population into homogeneous groups called strata.

## How do you find the mean of a simple random sample?

Use this formula to estimate the population mean:

- Sample mean = x = Σx / n.
- s2 = Σ ( xi – x )2 / ( n – 1 )
- where s2 is a sample estimate of population variance, x is the sample mean, xi is the ith element from the sample, and n is the number of elements in the sample.

## What is sample design and steps involved in it?

The sampling design process includes five steps which are closely related and are important to all aspect of the marketing research project. The five steps are: defining the target population; determining the sample frame; selecting a sampling technique; determining the sample size; and executing the sampling process.

## What is the main objective of using stratified random sampling?

The aim of stratified random sampling is to select participants from various strata within a larger population when the differences between those groups are believed to have relevance to the market research that will be conducted.

## What are the advantages and disadvantages of stratified sampling?

Stratified Sampling

Stratified Sampling | |

Advantages Free from researcher bias beyond the influence of the researcher produces a representative sample | Disadvantages Cannot reflect all differences complete representation is not possible |

Evaluation This way is free from bias and representative |

## What are the four steps to follow to design a good sample?

A systems analyst must follow four steps to design a good sample:

- Determine the data to be collected or described.
- Determine the population to be sampled.
- Choose the type of sample.
- Decide on the sample size.

## What are the main steps involved in a sample survey?

Typically, a sample survey consists of the following steps:

- Define the target population.
- Select the sampling scheme and sample size.
- Develop the questionnaire.
- Recruit and train the field investigators.
- Obtain information as per the questionnaire.
- Scrutinize the information gathered.
- Analyze and interpret the information.

## What is the first step in selecting a sample?

The first step in selecting a sample is to define the population to which one wishes to generalize the results of a study. Unfortunately, one may not be able to collect data from his or her TARGET POPULATION. In this case, an ACCESSIBLE POPULATION is used.