Exam (Latest-2024)
Define each of the following:
a) Variable.
A variable is a particular measurable attribute that the researcher believes is needed to describe the
element of study
b) Observation.
An observation is all the information collected for each element in the study
c) Data Set.
Data set is the arrangement collection of info that contain the various categories of data that is
collected for a specific study
Instructor Comments
Very good.
Answer Key
Define each of the following:
a) Variable.
a) A variable is a particular, measurable attribute that the researcher believes is needed to describe
the element in their study.
b) Observation.
b) An observation is all the information collected for each element in a study.
c) Data Set.
c) A data set is an arranged collection of information that contains the various categories of data
which were collected for a specific study.
,Exam Page 2
Explain outliers.
Outlier is a data point that differs from other observations, Comparing relationships between two sets
of data .
Instructor Comments
Very good.
Answer Key
Explain outliers.
An outlier is a value which is out of place compared to the other values (for example, it may be too
large or too small compared to the other values).
Look at the following data and see if you can identify any outliers:
7 8 2 4 5 65 9 10 3 11 71 15 16 19 17
The outliers are: 65,and 71
Instructor Comments
Very good.
Answer Key
Look at the following data and see if you can identify any outliers:
7 8 2 4 5 65 9 10 3 11 71 15 16 19 17
The outliers are:
65 71
Exam Page 4
The following pie chart shows the percentages of total items sold in a month in a certain fast
food restaurant.
,A total of 3300 fast food items were sold during the month.
How many were chicken?
How many were french fries?
How many were chicken? .20(3300)=660 fast food chickens were sold during the month.
How many were fries? .30(3300)= 990 fast food fries were sold during the month
Instructor Comments
Very good.
Answer Key
The following pie chart shows the percentages of total items sold in a month in a certain fast
food restaurant.
, A total of 3300 fast food items were sold during the month.
How many were chicken?
How many were french fries?
Chicken : 3300(.20) = 660
French Fries: 3300(.30) = 990