DATA PRESENTATION Flashcards
(20 cards)
uses statements with few numbers to
describe the data, purposely to get attention to some significant
data.
Textual presentation
Refers to a method of presenting data consisting of columns and rows.
Tabular Presentation
1.) includes the table number and the title of the table
2.) main part of the table that contains the information or figures
3.) classification or categories describing the data and usually found at the left most side of the table
4.) designations or identifications of the information contained in column, usually found at the top most of the column.
1.) TABLE HEADING
2.) BODY
3.) STUBS
4.) CAPTION
Common types of table according to the number of variables:
- One-Way Table
- Two-Way Table
- Three-Way Table
Refers to the number of observations that fall within a certain
range of the data.
Quantitative Frequency Distribution Table
1.) The ratio of the frequency of a class to the total observations
2.) The end points of an open interval which contains the class interval such that the lower class boundary (LCB) is the lower limit minus one-half the tolerance and the upper class boundary (UCB) is the
upper limit plus one-half the tolerance
1.) RELATIVE FACTORS
2.) CLASS BOUNDARIES
1.) (also known as midpoint) is the average of the upper limit and the lower limit of a class
2.) the running total of frequencies in a table. It is
used to answer questions about how often a characteristic occurs above or below a particular value.
1.) CLASS MARK
2.) CUMULATIVE FREQUENCY
uses visual representation of the relations between certain
quantities
Graph
1.) Usually used for qualitative variables
2.) Usually used for discrete quantitative variables or ordinal variables
1.) HORIZONTAL BAR GRAPH
2.) VERTICAL BAR GRAPH
bar graph with bars ordered from highest to lowest
frequency
Pareto graph
- Also known as segmented bar graph or stacked bar graph
- Made of bars representing the whole which is further divided
into smaller rectangles representing the parts
Component Bar Graph
- Also known as circle graph
- Used to show how a whole is divided into its component
parts. - Angle of each wedge or slice is determined by multiplying the
percentage contribution of the component by 3.6.
Pie Graph
1.) Time, chronologically arranged
2.) Data changing over time
1.) Horizontal Axis
2.) Vertical Axis
- Also known as time series chart
- A graph used for displaying data that changes continuously
over time
Line Graph
- A method of graphing frequency table.
- Horizontal axis represents the class boundaries
- A bar graph wherein the vertical lines of the bars are placed at
the class boundaries
Histogram
Constructed by joining with straight lines a series of points which are the class marks (or midpoints) of the classes as against their
corresponding frequencies.
Frequency Polygon
- Represents the cumulative frequencies of the classes.
- Constructed by joining with lines a series of points which are the class marks/midpoints of the classes as against the less than (or greater than) cumulative frequencies.
Ogive
The _____ is plotted against the upper class boundaries
The _____ is plotted against the lower class boundaries
1.) cf <
2.) cf >
- Presents the five-number summary of the data set (minimum,
lower quartile, median, upper quartile, maximum) - Outliers lie beyond the ranges of values and can be determined by using:
Lower fence = lower quartile – 1.5×IQR
Upper fence = upper quartile + 1.5×IQR
Box-and-Whisker Plot
a way to plot data where the data is split into stems (the largest digit) and leaves (the smallest digits).
- This is normally used to visualize the distribution of smaller
sample sizes, say less than 50.
Stem and Leaf Plot
