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- Sampling and data
- Practice: sampling and data
This module provides an opportunity for students to practice concepts related to statistical sampling and data. Given a sample data set, the student will practice constructing frequency tables, differentiating between key terms, and comparing sampling techniques.
Student learning outcomes
- The student will construct frequency tables.
- The student will differentiate between key terms.
- The student will compare sampling techniques.
Given
Studies are often done by pharmaceutical companies to determine the effectiveness of a treatment program. Suppose that a new AIDS antibody drug is currently under study. It is given to patients once the AIDS symptoms have revealed themselves. Of interest is the average(mean) length of time in months patients live once starting the treatment. Two researchers each follow a different set of 40 AIDS patients from the start of treatment until their deaths. The following data (in months) are collected.
Researcher a
- 3
- 4
- 11
- 15
- 16
- 17
- 22
- 44
- 37
- 16
- 14
- 24
- 25
- 15
- 26
- 27
- 33
- 29
- 35
- 44
- 13
- 21
- 22
- 10
- 12
- 8
- 40
- 32
- 26
- 27
- 31
- 34
- 29
- 17
- 8
- 24
- 18
- 47
- 33
- 34
Researcher b
- 3
- 14
- 11
- 5
- 16
- 17
- 28
- 41
- 31
- 18
- 14
- 14
- 26
- 25
- 21
- 22
- 31
- 2
- 35
- 44
- 23
- 21
- 21
- 16
- 12
- 18
- 41
- 22
- 16
- 25
- 33
- 34
- 29
- 13
- 18
- 24
- 23
- 42
- 33
- 29
Organize the data
Complete the tables below using the data provided.
Researcher a
| Survival Length (in months) |
Frequency |
Relative Frequency |
Cumulative Relative Frequency |
| 0.5 - 6.5 |
|
|
|
| 6.5 - 12.5 |
|
|
|
| 12.5 - 18.5 |
|
|
|
| 18.5 - 24.5 |
|
|
|
| 24.5 - 30.5 |
|
|
|
| 30.5 - 36.5 |
|
|
|
| 36.5 - 42.5 |
|
|
|
| 42.5 - 48.5 |
|
|
|
Researcher b
| Survival Length (in months) |
Frequency |
Relative Frequency |
Cumulative Relative Frequency |
| 0.5 - 6.5 |
|
|
|
| 6.5 - 12.5 |
|
|
|
| 12.5 - 18.5 |
|
|
|
| 18.5 - 24.5 |
|
|
|
| 24.5 - 30.5 |
|
|
|
| 30.5 - 36.5 |
|
|
|
| 36.5 - 42.5 |
|
|
|
| 42.5 - 48.5 |
|
|
|
Key terms
Define the key terms based upon the above example for Researcher A.
Discussion questions
Discuss the following questions and then answer in complete sentences.
Suppose that the first researcher conducted his survey by randomly choosing one state in the nation and then randomly picking 40 patients from that state. What sampling method would that researcher have used?
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Suppose that the second researcher conducted his survey by choosing 40 patients he knew. What sampling method would that researcher have used? What concerns would you have about this data set, based upon the data collection method?
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Questions & Answers
I'm interested in biological psychology and cognitive psychology
what does preconceived mean
How can I develope my cognitive domain
why is communication effective
Communication is effective because it allows individuals to share ideas, thoughts, and information with others.
effective communication can lead to improved outcomes in various settings, including personal relationships, business environments, and educational settings. By communicating effectively, individuals can negotiate effectively, solve problems collaboratively, and work towards common goals.
it starts up serve and return practice/assessments.it helps find voice talking therapy also assessments through relaxed conversation.
miss
Every time someone flushes a toilet in the apartment building, the person begins to jumb back automatically after hearing the flush, before the water temperature changes. Identify the types of learning, if it is classical conditioning identify the NS, UCS, CS and CR. If it is operant conditioning, identify the type of consequence positive reinforcement, negative reinforcement or punishment
please i need answer
Wekolamo
because it helps many people around the world to understand how to interact with other people and understand them well, for example at work (job).
Agreed 👍 There are many parts of our brains and behaviors, we really need to get to know. Blessings for everyone and happy Sunday!
ARC
A child is a member of community not society elucidate ?
Isn't practices worldwide, be it psychology, be it science. isn't much just a false belief of control over something the mind cannot truly comprehend?
compare and contrast skinner's perspective on personality development on freud
Skinner skipped the whole unconscious phenomenon and rather emphasized on classical conditioning
war
explain how nature and nurture affect the development and later the productivity of an individual.
nature is an hereditary factor while nurture is an environmental factor which constitute an individual personality. so if an individual's parent has a deviant behavior and was also brought up in an deviant environment, observation of the behavior and the inborn trait we make the individual deviant.
Samuel
I am taking this course because I am hoping that I could somehow learn more about my chosen field of interest and due to the fact that being a PsyD really ignites my passion as an individual the more I hope to learn about developing and literally explore the complexity of my critical thinking skills
and having a good philosophy of the world is like a sandwich and a peanut butter 👍
Jonathan
generally amnesi how long yrs memory loss
interpersonal relationships
What would be the best educational aid(s) for gifted kids/savants?
treat them normal, if they want help then give them.
that will make everyone happy
Saurabh
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Source:
OpenStax, Collaborative statistics. OpenStax CNX. Jul 03, 2012 Download for free at http://cnx.org/content/col10522/1.40
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