(ii) when extreme scores affect the mean at that time median is the best measure of central tendency (iii) when it is desired that certain scores should influence the central tendency (iv) when the distribution has an upper or lower class interval of unspecified length. 31 measures of central tendency: mode, median, and mean 32 measures of variation the median is the central value of an ordered distribution to ﬁnd it, 1 order the data from smallest to largest we ﬁrst order the data, and then note that there are an even number of entries so the median is constructed using the two middle values. - measures of dispersion are important for describing the spread of the data, or its variation around a central value two common measures of dispersion are range and standard deviation two common measures of dispersion are range and standard deviation. Central tendency refers to a central value or a representative value of a statistical series the central value represents the entire data in the sense that the values of observations in the data lie close to the central value. Advantages and disadvantages of measures of central tendency mean advantages one makes use of all the available data so it is the most powerful measure to use it is good for ordinal or interval sets of data disadvantages sometimes the end figure is a decimal figure, which makes the data less meaningful if there are extreme values (eg if a sequence was something like 3 6 4 3 40 3.
Measures of central tendency, namely median and mode are used positional averages, as the name indicates, mainly focus on the position of the value of an observation in the data set. Merits and demerits of sampling method of data collection article shared by advertisements: the methods, using which, we can get the samples below are given its merits and demerits on the whole measures of central tendency: 5 objectives of average this website includes study notes, research papers, essays, articles and other. Measures of central tendency 1 measures of central tendency 2 measures of dispersion measures of shape of distribution merit goods micro and macro economics models of economic growth mtdf 2005 multiplier and accelerator write a brief note on the achievements and failure of development among in pakistan. 1) arithmetic mean rigidly defined by algebraic formula 2) it is easy to calculate and simple to understand 3) it is based on all observations of the given data.
Note how in the left picture (an example of negative skew) the mean is the most leftward measure of central tendency that is, the mean is the most affected by the extreme scores on the left and is, thus, pulled furthest away from where the scores are piling up to the right. Advantage of the median (i) its value is not affected by extreme values thus it is a resistant measure of central tendency (ii) it is a good measure of location in a skewed distribution disavantage of the median 1) it does not take into consideration all the value of the variable. A comprehensive evaluation of measures of core inflation for canada measures of core inflation, however, have limitations – consequently, there is merit in monitoring a set of measures moreover, core inflation measures are best viewed as then the median may be a better measure of central tendency than the mean the weighted. Bachelor of commerce part – ii (sem- iii & iv ) q 2 a) write short notes on any two of the following in about 120 to 150 words each unit-2 measures of central tendency ( averages): 21 concept of central tendency 22 requirements of good statistical average. Measures of dispersions: range, quartile deviation, mean deviation, standard deviation and lorenz curve-their merits and limitations geography class: previous like a good measure of central tendency the good measure of dispersion should also have similar htiti rogram: pg subject: characteristics.
Definition of merit in english: merit noun creates for you a place where your work will be judged on merit alone’ ‘in its structure the ruling elite reflected a world of order and hierarchy in which promotion and status were rewarded on merit’ ‘but the director of government affairs for central railway said: ‘if the case is. Because of its simplicity, it s a very popular measure of the central tendency (2) less effect of marginal values: - compared top mean, mode is less affected by marginal values in the series mode is determined only by the value with highest frequencies. The measures of central tendency and measures of dispersion summarise mass data in terms of its two important features i with respect to nature of data to cluster around a central value ii.
Chart and diagram slides for powerpoint - beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects our new crystalgraphics chart and diagram slides for powerpoint is a collection of over 1000 impressively designed data-driven chart and editable diagram s guaranteed to impress any audience. Its value is never stable and it varies from sample to sample in a class-where normally the heights of students range from 160 to 180 centimeters if a dwarf whose height is 100 centimeters is admitted, the range would shoot up from 20 to 80 centimeters. The measures of dispersion are also called averages of the second order because they are based on the deviations of the different values from the mean or other measures of central tendency which are called averages of the first order. Among all measures of dispersion standard deviation is considered superior because it possesses almost all the requisite characteristics of a good measure of dispersion it has the following merits: 1) it is rigidly defined 2) it is based on all the observations of the series and hence it is. Demerits of unicameralism 1 tendency towards arrogance- once such a measure is taken, it is the people who suffer 3 lack of time- here you can publish your research papers, essays, letters, stories, poetries, biographies, notes, reviews, advises and allied information with a single vision to liberate knowledge.
Every concern whether big or small, must have a merit rating programme the only choice of the employer is to select the method of performance appraisal a systematic merit rating programme has a number of advantages over casual, unsystematic or haphazard appraisal under this method, a man is. Arithmetic average: the basic measure of central tendency arithmetic average , of arithmetic mean , or just mean , is probably the simplest tool in statistics, designed to measure central tendency in a data set (which can be a group of stocks or returns of a stock in particular years. The other kind of demerit is a punishment negative mark against someone, especially student or member the military noun merit can mean to me, merits demerits are given based on specific activities. Legal positivism is the thesis that the existence and content of law depends on social facts and not on its merits the english jurist john austin (1790-1859) formulated it thus: “the existence of law is one thing its merit and demerit another.
In statistics, a central tendency (or measure of central tendency) is a central or typical value for a probability distribution it may also be called a center or location of the distribution colloquially, measures of central tendency are often called averages.