Engineering Data Analysis Exam
Questions and Answers
(LL+UL)/2 - ANS-formula of Class Marks (CM)
bar chart - ANS-a chart with bars whose lengths are proportional to quantities
bar graph - ANS-a diagram in which the numerical values of variables are represented
by the height or length of lines or rectangles of equal width.
categorical variables - ANS-use category or label values to classify an item into one of
the several groups.
census - ANS-data collected from a population
CF/total x 100 - ANS-formula of Cumulative Relative Frequencies (CRF)
class limits - ANS-the values at the upper and lower ends of a class interval.
class marks - ANS-midpoints of the classes
cluster sampling - ANS-A probability sampling technique in which clusters of
participants within the population of interest are selected at random, followed by data
collection from all individuals in each cluster.
continous - ANS-resulting from measurements
convenience sampling - ANS-choosing individuals who are easiest to reach
cumulative frequency - ANS-a running total of frequencies
cumulative frequency polygon - ANS-also referred to as a frequency ogive. A frequency
ogive is a graphical representation of the cumulative frequency distribution
cumulative relative frequency - ANS-The term applies to an ordered set of observations
from smallest to largest. The cumulative relative frequency is the sum of the relative
frequencies for all values that are less than or equal to the given value.
data - ANS-are the actual values of the variable. They may be numbers or words.
Data presentation - ANS-an organized display of data
Questions and Answers
(LL+UL)/2 - ANS-formula of Class Marks (CM)
bar chart - ANS-a chart with bars whose lengths are proportional to quantities
bar graph - ANS-a diagram in which the numerical values of variables are represented
by the height or length of lines or rectangles of equal width.
categorical variables - ANS-use category or label values to classify an item into one of
the several groups.
census - ANS-data collected from a population
CF/total x 100 - ANS-formula of Cumulative Relative Frequencies (CRF)
class limits - ANS-the values at the upper and lower ends of a class interval.
class marks - ANS-midpoints of the classes
cluster sampling - ANS-A probability sampling technique in which clusters of
participants within the population of interest are selected at random, followed by data
collection from all individuals in each cluster.
continous - ANS-resulting from measurements
convenience sampling - ANS-choosing individuals who are easiest to reach
cumulative frequency - ANS-a running total of frequencies
cumulative frequency polygon - ANS-also referred to as a frequency ogive. A frequency
ogive is a graphical representation of the cumulative frequency distribution
cumulative relative frequency - ANS-The term applies to an ordered set of observations
from smallest to largest. The cumulative relative frequency is the sum of the relative
frequencies for all values that are less than or equal to the given value.
data - ANS-are the actual values of the variable. They may be numbers or words.
Data presentation - ANS-an organized display of data
