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Frequency distributions & data in tables and graphs
Descripción
(Descriptive Stats) HBS108 Mapa Mental sobre Frequency distributions & data in tables and graphs, creado por shirley.ha el 10/09/2013.
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descriptive stats
hbs108
hbs108
descriptive stats
Mapa Mental por
shirley.ha
, actualizado hace más de 1 año
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shirley.ha
hace casi 11 años
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Resumen del Recurso
Frequency distributions & data in tables and graphs
most basic descriptive statistic, and are a method of imposing some structure on numerical data.
systematic way of arranging numeric values from the lowest to the highest,
together with a count or percentage of the number of times each value occurred.
reflects a simple count of how frequently each value of the variable occurred.
Symmetric
shape indicates that if we were to fold the graph in half, the two halves of the frequency polygon would be superimposed
presented in the previous frequency histogram
polygon describes an approximately symmetric distribution (ie it is slightly skewed).
Skewed
peak of the graph is off-centre, with one tail longer than the other
+ve
longer tail is pointed towards the right
-ve
longer tail points towards the left
Recursos multimedia adjuntos
frequency_table (image/png)
freq_histogram (image/png)
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