WORKSHEET 1
1. Statistics is the science of conducting studies to :
a) Monitor , study and report on a subject
b) Solve a system of equation
c) Hypothesize experiment and for conclusion
d) Collect, organize , summarize , analyze and draw conclusion
2. Variables whose values that are determined by chance are called:
a) Inconsistent variables
b) Specialized
c) Random variable
d) Independent variable
3. ……………Consists of generalizing from sample to populations,
performing estimations and hypothesis tests , determining
relationship among variables, and making predictions.
a) Descriptive statistics
b) Discrete variables
c) Inferential Statistics
d) A sample
4. The number of student taking statistics exam. This is an example
of which type of data
a) Continuous
b) Ordinal
c) Qualitative
d) Discrete
5. "A diet high in fruits and vegetables will lower blood pressure".
The branch of statistics used in this statement is ..................
a) Descriptive statistics
b) Predictive statistics
c) Inferential statistics
d) Differential statistics
6. “The average age of students in Math class is 23 years ” which
branch of statistics used in above statement ?
a) Differential Statistics
b) Inferential Statistics
c) Predicative Statistics
d) Descriptive Statistics
WORKSHEET 2
1- “The score of students in a statistics test “, what is the type of
variable ?
a) Qualitative
b) Ratio
c) Discrete
d) Continues
2- Ratinghotels by number of stars is an example of what level of
measurement?
a) Nominal
b) Ratio
c) Interval
d) Ordinal
3- What type of sampling is employed if country is divided into
economic classes and a sample is chosen from each class to
surveyed?
a) Cluster sampling
b) Systematic sampling
c) Random sampling
d) Stratified sampling
4- Every 5 th student entering the gate is checked for possession of
univ. Card . What type of sampling is used ?
a) Cluster sampling
b) Systematic sampling
c) Random sampling
d) Stratified sampling
5- Which of the following represent an interval of measurement ?
a) Majors
b) Salaries of five tops mangers in Jeddah
c) Ranks of football teams
d) Temperature inside 10 refrigerators
6- “The number of cars “ , what is level of measurement of the
variable?
a) Ordinal
b) Continuous
c) Discrete
d) Ratio
WORKSHEET 3
1- When running an experimental study the variable that is
manipulated by the researcher is called .
a) Independent variable
b) Outcome variable
c) Confounding variable
d) Dependent variable
2- If a researcher manipulates one of the variable and tries to
determine how the manipulation influences other variables, the
researcher is conducting a
a) Manipulative study
b) Observational study
c) Experimental study
d) Independent study
3- A pharmaceutical company wants to test the effectiveness of their
new drug compared to an existing drug. They divide up the
subjects randomly into two groups, one group getting the new
drug and one group getting the existing drug.
Use this information to answer the questions (3-4).This is an
example of what type of study?
a) Outcomes study
b) Independent study
c) Observational study
d) Experimental study
4- ”The type of drug" here is the .................. variable.
a) Outcome
b) Dependent
c) Quantitative
d) Independent
5- A study that uses intact groups when it is not possible to randomly
assign participants to the groups is called a(n) ..................
a) applied study
b) quasi-experimental study
c) observational study
d) experimental study
6- If a researcher counts the number of people living in each house
in a specific street , the type of study is :
a) Independent study
b) Observational study
c) Experimental study.
d) Qusai- experimental study
WORKSHEET 4
7- An advertisement for an exercise product states :” Studies suggest
that using our machine reduce your weight ” this is an example of
a) Changing the subject
b) Detached statement
c) Implied connections
d) Ambiguous average
8- An advertisement for an exercise product states :” Using this product
will burn 74% more calories.” this is an example of
a) Changing the subject
b) Detached statement
c) Implied connections
d) Ambiguous average
9- “If only 5 doctors were asked about their opinion of new medicine.”,
this is an example of
a) Changing the subject
b) Detached statement
c) Suspect Samples
d) Ambiguous average
10- “What is your opinion about STC company ?” this is an example of
a) Changing the subject
b) Detached statement
c) Implied connections
d) Faulty Survey Question
11- "Almarai yogurt has less calories” this is an example of
a) Changing the subject
b) Detached statement
c) Implied connections
d) Faulty Survey Question