Sampling and measures of central tendency and dispersion introduction: overall job satisfaction (ojs) was the variable selected for this exercise because it lends itself to measures of central tendency and dispersion the data are quantitative and continuous in nature. The four measures of central tendency are mean-also called average, mode-the most frequently occurring numerical, median-the middle number after arranging all data from lowest to highest numerical and lastly standard deviation-root-mean-square or square-root of the variance these are the 4 measure of central tendency. Central tendency and dispersion below is a list of terms that are commonly used, it is important to know how to use them: arithmetic mean: all values in a set of data are added together and divided by the number of values (n.

Dispersion refers to the spread of the values around the central tendency there are two common measures of dispersion, the range and the standard deviation the range is simply the highest value minus the lowest value. Measures of the general value are a common need average, median, and mode are the three commonest average is the arithmetic average of all the values median is the actual measurement which is midway between the extreme values, and is often closest to the average mode is the commonest value other indicators of central tendency, may ignore all value beyond say, three. Topic 1: social psychology topic overview measures of central tendency, measures of dispersion, thematic analysis b consider strengths and weaknesses of the questionnaire b write up the procedure, results and discussion section of a report 15 practical investigation.

A guide to data handling explores the three measures of central tendency 2 measures of dispersion this video covers works from summarising data representing data 1 pie charts in this video we go through the process of plotting pie charts the strengths and weaknesses in pie charts are discussed, as well as how to interpret them 2. O what does this exercise indicate about the strengths and weaknesses of each of the measures of central tendency o calculate the range and the standard deviation for each data set 3. Discuss the major strengths and weaknesses of qualitative field research offer an example of research question that is more appropriate for using qualitative field research method than quantitative research method and explain why. Central tendency is defined as “the statistical measure that identifies a single value as representative of an entire distribution” it aims to provide an accurate description of the entire data it is the single value that is most typical/representative of the collected data. The measures of dispersion you use in psychology statistics show you the spread or variability of the variable you are measuring the three main ones are the range, the interquartile range and the standard deviation getting to know the range, interquartile range and standard deviation.

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)using arithmetic average has advantages and disadvantages, and in some cases you may find other measures (like. Measures of central tendency in this session we look at three different measures of central tendency or ‘average’ these are the mean, the median and the mode measures of dispersion in this session we also look at measures of dispersion that summarise the 'width' of the distribution broadly, there are ranges and variance measures. Chapter 3 to discuss measures of central tendency: 2, 3, 1, 4, 3, 1, 4, 6, and 3 among the nine scores in this set of data, the lowest score is 1 and the highest score is 6. A measure of central tendency is a single value that describes the way in which a group of data cluster around a central value to put in other words, it is a way to describe the center of a data set. 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.

Procedure concepts & operationalization variables central tendency & dispersion reliability and validity i reliability { the extent to which it is a consistent measure of. List strengths and weaknesses of each measure of central tendency and give its excel function (if any): (a) midrange, (b) geometric mean, and (c) 10 percent trimmed mean s (a) what is dispersion. The following points highlight the four main measures of dispersion they are: 1 range2 quartile deviation3 average deviation or ad 4 standard deviation or sd 1 range: range is the difference between the highest and the lowest scores in a series in the words of.

Measures of dispersion study play range •the difference between the highest and lowest score range — how •take away the lowest score from the highest range — strengths •shows us the difference of the values in the data range — weaknesses •can be skewered by outliers in data. Measures of central tendency • mean • median • mode • ie finding a ‘typical’ value from the middle of the data 3 you need to be able to: • explain how to calculate the mean, median and mode • state the strengths and weaknesses of mean, median and mode • this could include saying which one you would use for some data eg 2. A measure of central tendency (also referred to as measures of centre or central location) is a summary measure that attempts to describe a whole set of data with a single value that represents the middle or centre of its distribution. The measures of central tendency are the mean, the median, and the mode these values are computed from the data that we are given these values are computed from the data that we are given the mean and median are two different attempts to find a single number to.

Measures of dispersion describe the spread of data around a central value (mean, median or mode) they tell us how much variability there is in the data there are two measures of dispersion: range (where you subtract the lowest score from the highest score) and standard deviation (sd) – which. Learn about the strengths and weaknesses of using range in statistics with help from a mathematics educator in this free video clip variance and standard deviation as measures of dispersion. Strengths and weaknesses of the measures of central tendency and dispersion sampling and measures of central tendency and dispersion introduction: overall job satisfaction (ojs) was the variable selected for this exercise because it lends itself to measures of central tendency and dispersion the data are quantitative and continuous in nature.

Strengths and weaknesses of the measures of central tendency and dispersion

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