C207 OA Study Guide with Complete Solutions Rated A
Just Names that can be counted
Nominal Whole number, count, or total
(color of eyes, type of vehicle)
Names that can be placed in an order and then counted
Ordinal Whole number, count, or total
(top 10 football teams, satisfaction levels)
Numbers that have equal intervals and an order, but no
true zero
Interval
Can be added and subtracted (NOT multiplied/divided)
(shirt size, dates, times)
Numbers that have equal intervals and an order, but also
have a true zero
Ratio Can be added, subtracted, multiplied, divided, and ra-
tioed
(percentages, money, rates)
68.3 % of data within 1 σ of the mean
Normal Distribution/Bell Curve 95.4 % of data within 2 σ of the mean
99.7 % of data within 3 σ of the mean
"And, Both, All, Every, In a row"
Intersection
MULTIPLICATION
"Or, Either, Other"
Union
ADDITION
"Given that"
A, B =events
Bayes P (A|B) =probability of A given B is true
P (B|A) =probability of B given A is true
P(A), P(B) =the independent probabilities of A and B
Regression Keywords: Relationship, correlation, R-Square, scatter plot
1/4
Just Names that can be counted
Nominal Whole number, count, or total
(color of eyes, type of vehicle)
Names that can be placed in an order and then counted
Ordinal Whole number, count, or total
(top 10 football teams, satisfaction levels)
Numbers that have equal intervals and an order, but no
true zero
Interval
Can be added and subtracted (NOT multiplied/divided)
(shirt size, dates, times)
Numbers that have equal intervals and an order, but also
have a true zero
Ratio Can be added, subtracted, multiplied, divided, and ra-
tioed
(percentages, money, rates)
68.3 % of data within 1 σ of the mean
Normal Distribution/Bell Curve 95.4 % of data within 2 σ of the mean
99.7 % of data within 3 σ of the mean
"And, Both, All, Every, In a row"
Intersection
MULTIPLICATION
"Or, Either, Other"
Union
ADDITION
"Given that"
A, B =events
Bayes P (A|B) =probability of A given B is true
P (B|A) =probability of B given A is true
P(A), P(B) =the independent probabilities of A and B
Regression Keywords: Relationship, correlation, R-Square, scatter plot
1/4
