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If, in a frequency distribution, the initial class interval is indeterminate at its beginning and/or the final class interval is indeterminate at its end, the distribution is said to possess "open ended" classes.

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13y ago

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If a frequency distribution has open-ended intervals at the extremes which measure of central location is the most difficult to estimate?

mean


Why are open-ended frequency distributions necessary?

to quickly and effectively represent data


Can the median be found for an open ended distribution?

Yes, if it is a mathematically well behaved distribution.For a symmetric distribution, such as the Gaussian (Normal) it is the same as the mean.For the Standard Normal or the Student's t the median is 0.For the exponential distribution, with parameter lambda, the median is ln(2)/lambda. (ln = natural logarithm.]A chi-squared distribution with k degrees of freedom has a median approximated by k*(1 - 2/9k)^3.For a Beta(a, b) distribution the median depends on the incomplete Beta function but if a and b >1, then it can be approximated by (a - 1/3)/(a + b - 2/3).For a Weibull distribution, with scale parameter L and shape parameter K, it is L*(ln2)^(1/K).


What year segragetion ended?

it ended after the civil war and the reconstuction period many slaves were freed and went to freedmen beru to learn and help with a lot of other thing look it up on google for more information


Does quantitative research use open ended question?

Quantitative research typically does not use open-ended questions, as it focuses on numerical data and statistical analysis. Instead, it often employs closed-ended questions that can be easily quantified, such as multiple-choice or Likert scale questions. Open-ended questions are more commonly associated with qualitative research, which seeks to explore deeper insights and individual perspectives. However, some mixed-methods approaches may incorporate both types of questions for a more comprehensive analysis.