- Create an original posting with a minimum of 300 words.
- Back up your arguments with reliable evidence.
Sampling Methods
Instructions:
- Please find an experimental or quasi-experimental or descriptive article you wild like to use for the article critique assignment. Make sure it is from a nursing journal and is not older than five years. on a topic of your interest.
- Review the article and provide a summary of the article, and answer the following questions:
- Discuss whether you think the article is true-experimental, quasi-experimental, or no experimental. You must also state what type of quantitative design (descriptive, correlational, etc.)
- Where was the setting of the study?
- What are the sampling methods? Does the sample reflect the population (representativeness)? What about sample size? What was the risk of sampling error in the study? Did the author acknowledge the sample criteria? Inclusion or exclusion?
- What are the variables being measured?
- What data collections methods were used?
- What is the intervention?
Samplimg Methods: Descriptive Research
Sampling Methods
Descriptive Research
Objectives:
At the completion of this lesson you will be able to:
1. Learn the reasons for sampling
2. Develop an understanding about different sampling methods
3. Distinguish between probability & non probability sampling
4. Discuss the relative advantages & disadvantages of each sampling methods
5. Identifysampling methods in descriptive research.
6. State the purpose of descriptive research.
7. Explain when descriptive research is useful.
8. Distinguish between probability & non probability sampling.
9. Provide examples of descriptive research in nursing
Descriptive Research
Descriptive research is about describing how reality is, can involve collecting quantitative data.
Descriptive research seeks to provide an accurate description of observations of behavior and status and cannot make
predictions or determine causality.
Descriptive research is undertaken to provide answers to questions of who, what, where, when, and how – but not why.
Can describe categories
Examples:
What is the average age at which children learn to walk?
What % of adult men are unemployed…
What is the divorce rate…
Descriptive studies are classified as non experimental or observational designs.
Purpose
Determines, describes and documents the way things are.
Determine proportion of people who act a certain way
Classification of Descriptive studies
Classified by how data are collected
Self-report
Individuals respond to statements or questions about themselves
Observation
Data is collected by the researcher watching participants
Study variables
In descriptive studies elements, features, or characteristics of persons, experiences,
situations, or things studied are referred to as variables.
Statistics Versus Parameters
A parameter is a characteristic of a population. It is a numerical or graphic way to summarize
data obtained from the population.
A statistic, on the other hand, is a characteristic of a sample. It is a numerical or graphic way to summarize data
obtained from a sample.
Types of Numerical Data
There are two fundamental types of numerical data a researcher can collect.
Quantitative data are obtained by determining placement on a scale that indicates amount or degree.
Categorical data are data obtained by determining the frequency of occurrences in each of several categories.
Selecting Subjects: Target Population and Sampling
Sampling
The process of selecting units (e.g., people, organizations) from a population of interest for a study.
A sample is “a smaller (but hopefully representative) collection of units from a population used to det
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