please let me know the answer to the following questions
what is
a. Cummulative frequency
b. Histogram
c. Grouped frequency distribution
Answers
cummulative frequency.
Cumulative frequency analysis is the analysis of the frequency of occurrence of values of a phenomenon less than a reference value. The phenomenon may be time- or space-dependent. Cumulative frequency is also called frequency of non-exceedance.
histogram
A histogram is an accurate representation of the distribution of numerical data. It is an estimate of the probability distribution of a continuous variable and was first introduced by Karl Pearson. It differs from a bar graph, in the sense that a bar graph relates two variables, but a histogram relates only one.
group frequency distribution
Grouped data are data formed by aggregating individual observations of a variable into groups, so that a frequency distribution of these groups serves as a convenient means of summarizing or analyzing the data.
hope this really helps u and pls make it the braniest.....
a.
Cumulative Frequency : Sum of all the frequencies up to the current point in the data set.
b.
Histogram : It provides a visual interpretation of numerical data by showing the number of data points that fall within a specified range of values.
c.
Grouped Frequency Distribution : It is utilized for a high quantity of data, when it is impossible to list all of them in the table.
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