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2 pages/β‰ˆ550 words
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APA
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Psychology
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English (U.S.)
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Statistics & Population. Psychology Research Paper

Other (Not Listed) Instructions:

1.) State the statistical notation for each of the following terms. a.) population size b.)sample size c.)population d.) sample mean 4.)how do the sample mean and populatin mean differ? 5.)list five characteristics
of the mean. 12.) the following table lists the number of text messages sent per ay in a sample of college stuudents and a sample of theirparents.
time (min) frequeuncy
0 5
2 2
6 1
8 3
9 2
a.)compute the mean, the median,and the mode for the college students and parens data. b.) bassed on the shaped of the distribution for each sample
6.)when is the weighted mean equa to the arithmetic mean for for combining the mean for two or moree samples ?
17. )neuroscientist measure the reacton times (in second ) during anexperimenntal session in a sample of cocaine- addicted (n=8), morphine -addicted (n=12) and herion addicted rats (n=6) mean reaction times in each sample ?
are 11, 18, and 13 seconds, respectivey. hint the overall mean is not 14.0 seconds.
12.)based on the scaleof measurement for each variable listed below which measure of central tendency is most appriate for desribing the data ? a.)the distance in mies tat a group of athletes run to train for a marathon, b.) the rankings of college undergraduate acedemic programs, c.) the blood type (e.g, type A,B,AB,O) of a group of participants.

Other (Not Listed) Sample Content Preview:

Statistics
Student’s Name
Institutional Affiliation
Statistics
1.) State the statistical notation for each of the following terms.
* Population size=N
* Sample size=n
* Population mean=mu (μ)
* Sample mean=x-bar (xΜ„)
4.) How does the sample mean and population mean differ?
The sample mean is the mean of a sample (example of a population) derived or drawn from a populace at random while population mean, is the actual mean of the whole or entire group or community.
5.) List five characteristics of the mean.
* An average in a given aggregate that would be obtained if all values were the same
* Reflects the magnitude of every value
* A stable value that is not affected by groupings
* Values need not be ordered or grouped in its calculation
* All values may be unknown so long as their total and number is known, the mean can be calculated
12.) The following table lists the number of text messages sent per day in a sample of college students and a sample of their parents.
Time (min) Frequency0 52 26 18 39 2

* Compute the mean, the median, and the mode for the college students and parents’ data.
* Mean=4
* Median=2
* Mode=0
* Based on the shape of the distribution for each sample: unimodal distribution because there is one clear peak where 0 occurs five times.
6.) When is the weighted mean equal to the arithmetic mean for combining the mean for two or more samples?
The weighted mean is derived after mult...
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