Pergunta

4) A graph that is constructed by uning the lines to youn the mid points of each intervals of grouped troquency distribution is A. Histogram C Frequency polygon B. Bar-graph D. Cumulative Frequency curve B. 118 laborers are poid Birr3042 weekly Grade 12 Mathematics First Semater Model Examination 2017/ares
Solução

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EmersonElite · Tutor por 8 anos
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The correct answer is C. Frequency polygon.<br /><br />A frequency polygon is a graph that is constructed by using lines to join the midpoints of each interval of a grouped frequency distribution. It represents the frequency of each interval on the vertical axis and the midpoint of each interval on the horizontal axis. The lines connecting the midpoints of each interval form the frequency polygon.<br /><br />A histogram is a type of bar graph that represents the frequency of each interval on the vertical axis and the midpoint of each interval on the horizontal axis. However, the bars in a histogram are adjacent to each other, whereas the lines in a frequency polygon are connected.<br /><br />A bar graph is a type of chart that represents categorical data using bars of different heights or lengths. It is not used to represent frequency distributions.<br /><br />A cumulative frequency curve, also known as an ogive, represents the cumulative frequency of each interval on the vertical axis and the midpoint of each interval on the horizontal axis. It is used to determine the cumulative frequency of each interval and to identify the median, quartiles, and other percentiles of the data set.
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