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There is no minimum number: very few observations can be indicative. As the population number increases the observations should get closer to the Normal distribution. You should have 30 or so observations to get a smooth-ish curve.
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What percent of a normal population is within 2 standard deviations of the mean?
By the definition of standard deviation, 95.46% of the normal population will be within 2 SD of the mean. Explanation: The normal distribution of a population means it follows the "bell curve". The center of this bell curve is the population's mean value. One standard deviation defines two areas (on the left and right side of the central "mean" value) under the bell curve that each have 34.13% of the population. The next standard deviation adds two additional areas under the curve, each having 13.6% of the population. Adding the areas under the curves on both sides gives us (34.13% + 13.6%) x 2 = 95.46%
What kind of graph is a bell shaped curve?
The bell curve graph is another name for a normal (Gaussian) distribution graph. A Gaussian function is a certain kind of function whose graph results in a bell-shaped curve.
Is a bell shaped curve an example of a skewed distribution?
No.
Why is statistics important to research?
What is the "bell shaped" curve ? A common type of histogram characterized by a high center, tapered sides, and bell-flared edges. A bell-shaped curve reflects conditions that exhibit natural variation.
IQ scores on a graph look like?
a bell curve.
What population growth curves would be expected when a limiting factor is present?
bell curve
What show is that most members of a population have similar values for a given measurable trait?
A bell curve
What shows that most members of a population have similar values for a given measurable triat?
A bell curve
A bell curve indicates in a trait?
a bell curve indicates a what in a trait?
How many pages does The Bell Curve have?
The Bell Jar has 288 pages.
When was The Global Bell Curve created?
The Global Bell Curve was created in 2008.
What types of individuals in a population are represented by the two ends of a bell curve?
The individuals with extreme variations of a trait.
What does a bell curve of IQ look like?
The "bell curve" of anything, with the peak of the curve supposedly at a score of 100.
What does the phrase 'behind the curve' mean?
In a business sense, it usually means a new employee is not quite keeping up with the 'learning curve' required to perform a particular job. In other instances it would mean 'off the pace' or 'behind schedule'. The origin of the phrase refers to the statistical bell shaped curve also called the normal probability distribution; where to be 'behind the curve' is to be analogously in area of the graph to the left of the bell curve, to be 'ahead of the curve' analogously in the area of the graph to the right of the bell curve.
How many pages does The Global Bell Curve have?
The Global Bell Curve has 380 pages.
What is the definition of 'bell curve'?
A bell curve is a graph that depicts a large rounded peak tapering away at each end of normal distribution. A bell curve is a mathematical concept with the curve concentrated in the center.
How does the distribution of traits in a population look when displayed as a graph?
The term you are probably looking for is a Bell curve, which is a Gaussian distribution.
