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Home
- Collaborative statistics (with
- Sampling and data
- Frequency
In this sample, there are
5 players whose heights are between 59.95 - 61.95 inches,
3 players whose heights fall within the interval 61.95 - 63.95 inches,
15 players whose heights fall within the interval 63.95 - 65.95 inches,
40 players whose heights fall within the interval 65.95 - 67.95 inches,
17 players whose heights fall within the interval 67.95 - 69.95 inches,
12 players whose heights fall within the interval 69.95 - 71.95, 7 players whose height falls within the interval 71.95 - 73.95, and
1 player whose height falls within the interval 73.95 - 75.95. All heights fall between the endpoints of an interval and not at the endpoints.
From the table, find the percentage of heights that are less than 65.95 inches.
If you look at the first, second, and third rows, the heights are all less than 65.95 inches. There are 5 + 3 + 15 = 23 males whose heights are less than 65.95 inches. The percentage of heights less than 65.95 inches is then
or 23%. This percentage is the cumulative relative frequency entry in the third row.
From the table, find the percentage of heights that fall between 61.95 and 65.95 inches.
Add the relative frequencies in the second and third rows: 0.03 + 0.15 = 0.18 or 18%.
Use the table of heights of the 100 male semiprofessional soccer players. Fill in the blanks and check your answers.
- The percentage of heights that are from 67.95 to 71.95 inches is:
- The percentage of heights that are from 67.95 to 73.95 inches is:
- The percentage of heights that are more than 65.95 inches is:
- The number of players in the sample who are between 61.95 and 71.95 inches tall is:
- What kind of data are the heights?
- Describe how you could gather this data (the heights) so that the data are characteristic of all male semiprofessional soccer players.
Remember, you
count frequencies . To find the relative frequency, divide the frequency by the total number of data values. To find the cumulative relative frequency, add all of the previous relative frequencies to the relative frequency for the current row.
- 29%
- 36%
- 77%
- 87
- quantitative continuous
- get rosters from each team and choose a simple random sample from each
Optional collaborative classroom exercise
In your class, have someone conduct a survey of the number of siblings (brothers and sisters) each student has. Create a frequency table. Add to it a relative frequency column and a cumulative relative frequency column. Answer the following questions:
- What percentage of the students in your class has 0 siblings?
- What percentage of the students has from 1 to 3 siblings?
- What percentage of the students has fewer than 3 siblings?
Nineteen people were asked how many miles, to the nearest mile they commute to work each day. The data are as follows:
- 2
- 5
- 7
- 3
- 2
- 10
- 18
- 15
- 20
- 7
- 10
- 18
- 5
- 12
- 13
- 12
- 4
- 5
- 10
The following table was produced:
Frequency of commuting distances
| DATA |
FREQUENCY |
RELATIVE
FREQUENCY |
CUMULATIVE
RELATIVE
FREQUENCY |
| 3 |
3 |
|
0.1579 |
| 4 |
1 |
|
0.2105 |
| 5 |
3 |
|
0.1579 |
| 7 |
2 |
|
0.2632 |
| 10 |
3 |
|
0.4737 |
| 12 |
2 |
|
0.7895 |
| 13 |
1 |
|
0.8421 |
| 15 |
1 |
|
0.8948 |
| 18 |
1 |
|
0.9474 |
| 20 |
1 |
|
1.0000 |
- Is the table correct? If it is not correct, what is wrong?
- True or False: Three percent of the people surveyed commute 3 miles. If the statement is not correct, what should it be? If the table is incorrect, make the corrections.
- What fraction of the people surveyed commute 5 or 7 miles?
- What fraction of the people surveyed commute 12 miles or more? Less than 12 miles? Between 5 and 13 miles (does not include 5 and 13 miles)?
- No. Frequency column sums to 18, not 19. Not all cumulative relative frequencies are correct.
- False. Frequency for 3 miles should be 1; for 2 miles (left out), 2. Cumulative relative frequency column should read: 0.1052, 0.1579, 0.2105, 0.3684, 0.4737, 0.6316, 0.7368, 0.7895, 0.8421, 0.9474, 1.
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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 (with edits: teegarden). OpenStax CNX. Jul 20, 2009 Download for free at http://legacy.cnx.org/content/col10561/1.3
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