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Statistics
Statistics deals with collecting, organizing, and interpreting numerical data. An important aspect of statistics is the analysis of population characteristics inferred from sampling.
36,756 Questions
What is the difference between bode plot and root locus?
Bode plot is for Frequency Response Analysis
Root-Locus plot is for time-domain analysis
Which digit has the least value in 14789?
Well, sugar, the digit with the least value in 14789 is 1. It's just hanging out there at the front, not really doing much in terms of value compared to its buddies 4, 7, 8, and 9. But hey, it's still part of the gang, so we gotta give it some love.
Explain the importance of random and stratified sampling?
A sampling method in which all members of a group have an equal and independent chance of being selected.
What numbers have the mean of 10 and the range of 12?
four and sixteen
16 - 4 = 12
16 + 4 = 20 then 20 / 2 = 10
Half of 12 is 6, therefore the two numbers 10 - 6 = 4 and 10 + 6 = 16 will have a mean of 10 and a range of 12.
Further numbers can be added between 4 and 16 as long as their mean is still 10, eg the data sets:
- {4, 16}
- {4, 10, 16}
- {4, 8, 12, 16}
- {4, 8, 10, 12, 16}
- {4, 7, 9, 14, 16}
What is the difference between Population census and estimate census?
Population is total number of people who live in a geographical area
How many radii does a circle have?
A radii is just a plural form of radius. A circle doesnt have one radius. The term radii is mostly used when talking about multiple circles.
What is the radii of a circle?
The radius(radii is the plural) of the circle is half the distance of circle's diameter. The formula is r=(1/2)diameter.
How do you find diameter of a circle with the diameter 10?
You have answered this question for yourself; the answer is '10'
Do you mean to ask ; What is the circumference/area of a circle, with a diameter of '10'?.
If so , commit to memory ' elementary school maths.
A = pi r^2
C = 2 pi r or pi d .
From this 2r = d
Hence 2r = 10
r = 5
C = 10 pi = 31.41592.... units
A = pi 5^2 = 25 pi = 78.5398... units^2
What is the area of a circle with a diameter of 8?
Commit to memory
A = pi r^2
C = 2 pi r or pi d
NB 2r = d
This is elementary school maths.
Hence if d = 2r 8 , then r = 8/2 = 4
Hence
A = pi 4^2
A = 16 pi
pi is a constant at 3.141592....
A = 16*3.41592.... = 50.26554.... units^2
An analysis shows that the risk of loss is less than the cost of examining every voucher at the approved threshold.
Yes, those events can be found.
What is the term referring to a subculture tendency to kill as a measure of the manhood?
Differential association
Why are graphs important in statistics?
Graphs visualize data allowing the brain to interpret a large data set quickly and infer trends.
Is it true or false that a convenience sample usually consist of respondents with strong opinions?
Yes
What is circular systematic sampling?
Circular systematic sampling is a random sampling method. An example is random sampling of households. Assume that a random number generator provides the number 49 as a starting point. Starting with the household that is 49 on the target list, every nth household on the list would be sampled until the desired sample size is reached
Information on the cost of things
Difference between biased and unbiased errors?
A biased error is one that is caused by a factor inherent to the source of the error. An unbiased error is one that comes from anywhere.
What are the parameters of the t distribution?
The usual Student's t distribribution has only one parameter, known as the degrees of freedom.
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