1An organized tabulation of the number of individuals located in different
categories in different levels of measurements
frequency distribution
2what are the two types of frequency distribution?
categorical and grouped
3Used to organize nominal-level type of data
Categorical Frequency Distribution
4difference of the highest value and the lowest value in a distribution
Range
5Distance between the lower class boundary and
the upper class boundary; denoted by the “i.”
class interval (width)
6lower-class limit is also known as the ?
apparent limit
7Highest and lowest value of a class
Class limit
8Upper and lower values of a class
whose values has additional decimal place more than the class limits and end with the
digit, 5.
class boundaries
9class boundaries are also called?
real limits
10Value obtained when the frequencies in each
class are divided by the total number of values
relative frequency
11Obtained by multiplying the relative frequency by 100%
percentage
12Sum of frequencies accumulated up to the
upper boundary of a class in a frequency distribution
cumulative frequency
13Point halfway between the class limits of each class and is representative of the data within that class
midpoints
14Can be found by getting the average of the upper limit and lower limit in each class
midpoints
15Guidelines in Graphing Data
• The graph/chart should include a title.
• The scales for all axes should be included.
• The scale on the x and y-axis should start at zero.
• The graph/chart should not distort the data.
• The axes should be properly labeled.
• The graph/chart should not contain unnecessary decorations
16Graph in which the classes are marked on the horizontal axis (x-axis) and
the class frequencies on the vertical axis (y-axis)
Histogram
17Focuses on the frequency of each class and sacrifices whatever information was
contained in the actual observation
Histogram
18Displays data using points which are connected by lines
frequency polygon
19represented by the heights of the points at the midpoints of the classes.
frequencies
20in a frequency polygon, the vertical axis represents the ?? while the horizontal axis represents the ???
frequency of the distribution; midpoints
21Graph that displays the cumulative
frequencies for the classes in a frequency distribution
Cumulative Frequency Polygon (Ogive)
22in Ogive, the vertical axis represents the ?? of the distribution while the
horizontal axis represents the ??
cummulative frequency; upper-class boundaries
23Frequency distribution for a nominal or ordinal data where the heights of the
bar represent the frequency of members under that category.
bar graph
24Used to represent a frequency distribution for a categorical data and frequencies are displayed by the heights of vertical bars which are arranged in order from highest to lowest
pareto chart
25Circle divided into portions
that represent relative frequencies
(percentages) of the data belonging to
different categories
pie graph
26Represents data that occur over a specific period of time under
observation.
time series graph
27in a pie graph, the data should be ?
categorical
28Used to examine possible relationships between 2 numerical variables
scatter plot
29Represents data through pictures arranged in a row/column.
Pictograph