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Approximately normal distributions occur in many situations, as explained by the central limit theorem. When there is reason to suspect the presence of a large number of small effects acting additively and independently, it is reasonable to assume that observations will be normal.
Reference Wikipedia on Normal Distribution. See related link.
Examples of bell shaped curves are t-distribution and normal distribution. There is little difference between the two curves when the sample size is greater than 30.
What else can I help you with?
Which produces a symmetrical bell shaped curve?
There are several distributions which fit that description. Besides, I have never seen a bell in which the bottom is infinitely far from the middle!
How does a curve work in college grading systems?
In college grading systems, a curve is a method used to adjust students' grades based on the overall performance of the class. This means that the grades are adjusted to fit a predetermined distribution, such as a bell curve, to ensure fairness and consistency in grading.
Can a blackberry curve 3g battery cover fit in a blackberry curve 8520?
Yes it does!
In research you often rely on the 68-95-99 rule?
This rule is related to the standard deviation of a sampled population. In research, data is collected to find out something about the subjects being studied or examined. In most cases, we expect the collected statistics (data) to fit the normal distribution, which is also called the "bell curve" distribution. If the data fits this curve, there will be three distinct points along the bell curve that are statistically important. These three points are the first, second, and third standard deviations from the sample mean. The numbers 68, 95, and 99 correspond to the percentage of all samples that will fall within the three regions defined by the 1st, 2nd, and 3rd standard deviations.
How do you estimate the best fit of curve?
You always use some model (i.e. function) to fit experimental curve. If you do not know the kind of curve (linear, parabola, Gauss, etc.) you can try to fit with different functions and then compare the residual sum of squares and coefficient of determination of those fit functions. I use MagicPlot for curve fitting, you can try to find something in MagicPlot on-line help.
What is linearity error?
When a function or given data set differes from a liniar curve fit. the difference between the data and a linear curve fit is your linearity error
What is a curve grade and how does it affect students' final marks?
A curve grade is when a teacher adjusts students' scores to fit a predetermined distribution, usually a bell curve. This can raise or lower a student's grade based on how they compare to their peers. It can affect a student's final mark by either boosting their grade if they performed better than the average, or lowering it if they performed below the average.
Will a bb Chevy bell housing fit a sb Chevy?
no yes a bb Chevy bell housing can fit a sbc. but you should remember that 10 in or a 10.5 in bell housing will not fit an 11 in pressure plate. Just make sure that the bell housing will fit the pressure plate and you'll be just fine.
Will a blackberry curve 3g case fit a blackberry curve 8520?
Hi the Blackberry Curve 3g is the Blackberry Curve 9300 3g . This is exactly the same phone as the Curve 8520 but it has updated software and a chrome style body. So yes if you see a case you like for the 8520 then you happily buy it knowing that it will fit the 9300 3G. Hope this helps
How do curving grades work in academic settings?
Curving grades in academic settings involves adjusting students' scores to fit a predetermined distribution, often a bell curve. This can raise or lower grades based on the overall performance of the class.
What is the French Curve used for in sewing?
The French curve, or designer's curve, is used for creating garment patterns. Patterns are usually based on standardized sizes intended to fit what's considered to be average sizes.Standardized sizing don't fit everyone, which is why a French Curve is handy. The French Curve can be used to customize garment patterns, allowing sewers to adjust them to fit curvaceous figures or lower a neckline.Examples of uses of a French Curve:Fitting the hips in a skirt or pantsDarts for bustlinesArmholesLower the neckline
Difference between line of best fit and curve of best fit?
one is straight and one is curved simple
