PBSI 301 Exam 1 questions with verified answers
already passed
1. What is statistics? a set of tools and techniques used for describing, organizing, and
inter-
preting information or data
2. What are the 3 (1) DESCRIPTION (how do people behave?, ex: rule-
main goals of based vs. rule-free play behavior among children)
statistics?
(2) PREDICTION (identifying the factors that influence
behavior, ex: when a group has more boys than girls, play is
more likely to include a lot of rules)
(3) EXPLANATION (identifying the underlying causes of
a behavior, ex: boys are more competitive; rule-based games
allow for more competi- tion)
used to organize and describe data
3. What are
descriptive
statistics?
-the 'next step' after description
4. What are -allow you to INFER the truth about a larger group of
inferential people from a smaller group of people
statistics?
5. What are samples? - the group you actually collect data from
-this is a smaller group (subset) of the larger group you are
interested in
-ex: 100 students asked in the MSC
6. What are populations? the group you are actually interested in drawing some
conclusions about
-ex: all A&M students
7. What is a variable? - something that can change or have ditterent values for ditterent
individ-
uals
1/
19
,PBSI 301 Exam 1 questions with verified answers
already passed
-represents the concepts we are interested in
-ex: favorite baseball team, major, age, gender
8. What is data? - information collected from the sample on the variables we are
interested
in
2/
19
,PBSI 301 Exam 1 questions with verified answers
already passed
calculate the mode?
9. What is
continuous
data?
10. What is
categorial
data?
11. What is central
tenden- cy?
12. How do you
calculate the mean
(average) & what
is the formula?
13. How do you
calculate the
median (midpoint)?
14. How do you
3/
19
already passed
1. What is statistics? a set of tools and techniques used for describing, organizing, and
inter-
preting information or data
2. What are the 3 (1) DESCRIPTION (how do people behave?, ex: rule-
main goals of based vs. rule-free play behavior among children)
statistics?
(2) PREDICTION (identifying the factors that influence
behavior, ex: when a group has more boys than girls, play is
more likely to include a lot of rules)
(3) EXPLANATION (identifying the underlying causes of
a behavior, ex: boys are more competitive; rule-based games
allow for more competi- tion)
used to organize and describe data
3. What are
descriptive
statistics?
-the 'next step' after description
4. What are -allow you to INFER the truth about a larger group of
inferential people from a smaller group of people
statistics?
5. What are samples? - the group you actually collect data from
-this is a smaller group (subset) of the larger group you are
interested in
-ex: 100 students asked in the MSC
6. What are populations? the group you are actually interested in drawing some
conclusions about
-ex: all A&M students
7. What is a variable? - something that can change or have ditterent values for ditterent
individ-
uals
1/
19
,PBSI 301 Exam 1 questions with verified answers
already passed
-represents the concepts we are interested in
-ex: favorite baseball team, major, age, gender
8. What is data? - information collected from the sample on the variables we are
interested
in
2/
19
,PBSI 301 Exam 1 questions with verified answers
already passed
calculate the mode?
9. What is
continuous
data?
10. What is
categorial
data?
11. What is central
tenden- cy?
12. How do you
calculate the mean
(average) & what
is the formula?
13. How do you
calculate the
median (midpoint)?
14. How do you
3/
19
