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What is the minimum population required for a bell curve?
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.
What is commulative frequency distribution?
The cumulative frequency distribution for a value x of a random variable X, is a count of the number of observations in which X is less than or equal to x. The cumulative frequency distribution for a value x of a random variable X, is a count of the number of observations in which X is less than or equal to x. The cumulative frequency distribution for a value x of a random variable X, is a count of the number of observations in which X is less than or equal to x. The cumulative frequency distribution for a value x of a random variable X, is a count of the number of observations in which X is less than or equal to x.
How is the chi square independence test similar to the goodness of fit test how is it different?
With either test, you have a number of categories and for each you have an expected number of observations. The expected number is based either on the variable being independent of some other variable, or determined by some know (or hypothesised) distribution. You will also have a number of observations of the variable for each category. The test statistic is based on the observed and expected frequencies and has a chi-squared distribution. The tests require the observations to come from independent, identically distributed variables.
What does inquartile range mean in math?
It has no meaning. In statistics, if you have a set of observations, the lower quartile (Q1) is the value such that a quarter of the [number of] observations are smaller and three quarters are larger. The upper quartile, Q3, is defined similarly as the value such that a quarter of the observations are larger. The interquartile range, is the distance between these two: IQR = Q3 - Q1.
What does the word relative frequency as a decimal mean in math?
It is the observed frequency divided by the total number of observations, expressed as a percentage.
What measure gives the average value?
Sum of observations/Number of observations.
Observations that deal with a number or amount are called?
Such observations are said to be quantitative.
What are class frequencies?
THey are the number of observations whose value fall within the class boundaries.THey are the number of observations whose value fall within the class boundaries.THey are the number of observations whose value fall within the class boundaries.THey are the number of observations whose value fall within the class boundaries.
Why do you find the mean?
You calculate the sum of all the observations and divide the answer by the number of observations.
What percentile is 34 out of 375?
A percentile depends on the distribution of the observations, not the total number of observations.
How do you Measure mean value?
You add together all the observations and divide the result by the number of observations.
How do quantitative observations differ from qualitative observations?
quatitative observations have to do with QUANTITY and qualitative observations have to do with QUALITY.
What are observations that deal with number or amounts?
Quantitative
What are observations that deal with number amounts?
Quantitative
In a data set the number of observations will always be the same as the number of what?
elements
What is the average in math?
Average, if unqualified, refers to the arithmetic average which is the sum of the observations divided by the number of observations. Average- a number that typifies a set of numbers of which it is a function.
How do you figure out the relative frequency with a class limit of 0-9?
9
