Jekyll2021-07-13T07:22:11+00:00http://vitutr.archaeological.science/feed.xmlvitutrA site for video tutorials for R, specifically for archaeologists.Martin Hinzt-Test2019-07-10T00:00:00+00:002019-07-10T00:00:00+00:00http://vitutr.archaeological.science/statistical%20methods%20for%20archaeological%20data%20analysis%20i%202019/2019/07/10/t-test<p>This video covers the t-test, the “workhorse” of parametric data analysis. As a parametric test, the t-test has some data requirements that need to be verified beforehand. To this end, the Kolmogorow-Smirnow-Test or the Shapiro-Test are used to ensure normal distribution and the F-Test for variance homogeneity. These are also presented.
<!--more--></p>
<iframe width="640" height="360" src="https://tube.switch.ch/embed/59fee43c" frameborder="0" webkitallowfullscreen="" mozallowfullscreen="" allowfullscreen=""></iframe>Martin HinzThis video covers the t-test, the “workhorse” of parametric data analysis. As a parametric test, the t-test has some data requirements that need to be verified beforehand. To this end, the Kolmogorow-Smirnow-Test or the Shapiro-Test are used to ensure normal distribution and the F-Test for variance homogeneity. These are also presented.Measurement of Association2019-07-09T00:00:00+00:002019-07-09T00:00:00+00:00http://vitutr.archaeological.science/statistical%20methods%20for%20archaeological%20data%20analysis%20i%202019/2019/07/09/associations<p>This episode deals with determining the strength of associations at nominal data level: Yules Q, phi and Cramers V.
<!--more--></p>
<iframe width="640" height="360" src="https://tube.switch.ch/embed/8bacf194" frameborder="0" webkitallowfullscreen="" mozallowfullscreen="" allowfullscreen=""></iframe>Martin HinzThis episode deals with determining the strength of associations at nominal data level: Yules Q, phi and Cramers V.Fishers Exact Test2019-07-09T00:00:00+00:002019-07-09T00:00:00+00:00http://vitutr.archaeological.science/statistical%20methods%20for%20archaeological%20data%20analysis%20i%202019/2019/07/09/fisher_test<p>This episode is about an alternative to the Chi2 test if the record does not meet its requirements: Fisher’s exact test.
<!--more--></p>
<iframe width="640" height="360" src="https://tube.switch.ch/embed/8751f1ee" frameborder="0" webkitallowfullscreen="" mozallowfullscreen="" allowfullscreen=""></iframe>Martin HinzThis episode is about an alternative to the Chi2 test if the record does not meet its requirements: Fisher’s exact test.Chi-square test and inverse tabulation2019-05-24T00:00:00+00:002019-05-24T00:00:00+00:00http://vitutr.archaeological.science/statistical%20methods%20for%20archaeological%20data%20analysis%20i%202019/2019/05/24/chi_square_test<p>This episode deals primarily with the chi-square test, as the test for the relationship of categorical, nominal data. In this context, the transformation of data from the tabular form to the individual case form is described.
<!--more--></p>
<iframe width="640" height="360" src="https://tube.switch.ch/embed/fea2001e" frameborder="0" webkitallowfullscreen="" mozallowfullscreen="" allowfullscreen=""></iframe>Martin HinzThis episode deals primarily with the chi-square test, as the test for the relationship of categorical, nominal data. In this context, the transformation of data from the tabular form to the individual case form is described.Mann-Whitney-U-Test2019-05-24T00:00:00+00:002019-05-24T00:00:00+00:00http://vitutr.archaeological.science/statistical%20methods%20for%20archaeological%20data%20analysis%20i%202019/2019/05/24/mann_whitney_U_test<p>This episode is about another nonparametric test, the Mann-Whitney-U- or Wilcoxon rank sum test, which offers a more powerful alternative to the Kolmogorow-Smirnow test under certain parameters.
<!--more--></p>
<iframe width="640" height="360" src="https://tube.switch.ch/embed/eb6ec1c1" frameborder="0" webkitallowfullscreen="" mozallowfullscreen="" allowfullscreen=""></iframe>Martin HinzThis episode is about another nonparametric test, the Mann-Whitney-U- or Wilcoxon rank sum test, which offers a more powerful alternative to the Kolmogorow-Smirnow test under certain parameters.Kolmogorov-Smirnov-Test2019-05-23T00:00:00+00:002019-05-23T00:00:00+00:00http://vitutr.archaeological.science/statistical%20methods%20for%20archaeological%20data%20analysis%20i%202019/2019/05/23/ks_test<p>The first in a series of nonparametric tests, one of the most undemanding is the Kolmogorov-Smirnov test, which is capable of comparing two ordinally scaled distributions.
<!--more--></p>
<iframe width="640" height="360" src="https://tube.switch.ch/embed/6aadf40f" frameborder="0" webkitallowfullscreen="" mozallowfullscreen="" allowfullscreen=""></iframe>Martin HinzThe first in a series of nonparametric tests, one of the most undemanding is the Kolmogorov-Smirnov test, which is capable of comparing two ordinally scaled distributions.Skewness and Kurtosis2019-05-23T00:00:00+00:002019-05-23T00:00:00+00:00http://vitutr.archaeological.science/statistical%20methods%20for%20archaeological%20data%20analysis%20i%202019/2019/05/23/skewness_and_kurtosis<p>To round off the descriptive statistics two more measures for the shape of distributions: skewness and kurtosis of distributions.
<!--more--></p>
<iframe width="640" height="360" src="https://tube.switch.ch/embed/0725bd8c" frameborder="0" webkitallowfullscreen="" mozallowfullscreen="" allowfullscreen=""></iframe>Martin HinzTo round off the descriptive statistics two more measures for the shape of distributions: skewness and kurtosis of distributions.Measurement of dispersion2019-05-18T00:00:00+00:002019-05-18T00:00:00+00:00http://vitutr.archaeological.science/statistical%20methods%20for%20archaeological%20data%20analysis%20i%202019/2019/05/18/measurement_of_dispersion<p>Range, interquartile range, variance, standard deviation and coefficient of variation: measures of variability within a data set.
<!--more--></p>
<iframe width="640" height="360" src="https://tube.switch.ch/embed/8d3fe769" frameborder="0" webkitallowfullscreen="" mozallowfullscreen="" allowfullscreen=""></iframe>Martin HinzRange, interquartile range, variance, standard deviation and coefficient of variation: measures of variability within a data set.Central Tendency2019-05-17T00:00:00+00:002019-05-17T00:00:00+00:00http://vitutr.archaeological.science/statistical%20methods%20for%20archaeological%20data%20analysis%20i%202019/2019/05/17/central_tendency<p>Arithmetic mean, median and quantiles as a measure of the location of a data set on a variable, the central tendency. Also shortly mentioned is the mode.
<!--more--></p>
<iframe width="640" height="360" src="https://tube.switch.ch/embed/881ab6bf" frameborder="0" webkitallowfullscreen="" mozallowfullscreen="" allowfullscreen=""></iframe>Martin HinzArithmetic mean, median and quantiles as a measure of the location of a data set on a variable, the central tendency. Also shortly mentioned is the mode.High level Plots from Scratch and Triplots2019-05-10T00:00:00+00:002019-05-10T00:00:00+00:00http://vitutr.archaeological.science/statistical%20methods%20for%20archaeological%20data%20analysis%20i%202019/2019/05/10/cumsum_and_triplots<p>This episode rounds off the series on descriptive statistics with high level plots, from scratch or ready made with the example of the triplot.
<!--more--></p>
<iframe width="640" height="360" src="https://tube.switch.ch/embed/b23d4066" frameborder="0" webkitallowfullscreen="" mozallowfullscreen="" allowfullscreen=""></iframe>Martin HinzThis episode rounds off the series on descriptive statistics with high level plots, from scratch or ready made with the example of the triplot.