STATISTIC 2

17問 • 3ヶ月前

問題一覧

– this form of presentation combines text and numerical facts in a statistical report.

textual

– This form of presentation is better than textual form because it provides numerical facts in a more concise and systematic manner

Tabular

– this is the most effective means of organizing and presenting statistical data because the important relationships are brought out more clearly and creatively in virtually solid and colourful figure.

Graphical Presentation

– Shows relationships between two sets of quantities. This is done by plotting point of X set of quantities along the horizontal axis against the Y set of quantities along the vertical axis in a Cartesian coordinate plane.

Line Graph

– consists of bars or rectangles of equal widths, either drawn vertically or horizontally, segmented or non-segmented.

Bar Graph

– It represents relationship of the different components of a single total as revealed in the sectors of a circle.

Circle Graph or Pie Chart

– it is a visual presentation of statistical quantities by means of drawing pictures or symbols related to the subject under study.

Picture Graph or Pictogram

– it is one of the best ways to present geographical data. This kind of graph is always accompanied by a legend which tells us the meaning of the lines, colors, or other symbols used and positioned in a map

Cartogram

– it is a graphical device to show the relationship between two quantitative variables.

Scatter Point Diagram

is a tabulation or grouping of data into appropriate categories showing the number of observations in each group or category. Consider the data below which show the scores of 60 students in a statistics tes

Frequency Distribution

The numbers shown above are called

Raw Data

– groupings or categories defined by lower and upper limits

Class Limits

are the highest numbers that belong to the different classes.

Upper class limits

– width of each class interval

Class size

are the numbers used to separate class but without gaps created by class limits. The number to be added or subtracted is half the difference between the upper limit of one class and the lower limit of the next class.

Class boundaries

are the midpoints of the lower and upper class limits. They can be found by adding the lower and upper limits and then divide by 2.

Class marks

The “less than” cumulative frequency distribution (<cf) is obtained by adding frequencies successively from the lowest to the highest interval while “more than” cumulative frequency distribution (>cf) is obtained by adding frequencies from the highest class interval to the lower class interval

Cumulative Frequency Distribution

ICT HISTORY

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Desa Mae Santiago · 17問 · 4ヶ月前

BBME

17問 • 4ヶ月前

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