C207 OA STUDY GUIDE VERIFIED TO PASS 2025/2026
Nominal Just Names that can be counted Whole number, count, or total (color of eyes, type of
vehicle)
1. Ordinal Names that can be placed in an order and then
counted Whole number, count, or total
(top 10 football teams, satisfaction levels)
2. Interval Numbers that have equal intervals and an order, but no true zero
Can be added and subtracted (NOT
multiplied/divided) (shirt size, dates, times)
3. Ratio Numbers that have equal intervals and an order, but also have a true
zero Can be added, subtracted, multiplied, divided, and ratioed
(percentages, money, rates)
4. Normal 68.3 % of data within 1 σ of the mean
Distribu- 95.4 % of data within 2 σ of the mean
tion/Bell
99.7 % of data within 3 σ of the mean
Curve
5. Intersection "And, Both, All, Every, In a row"
MULTIPLICATION
6. Union "Or, Either,
Other"
ADDITION
7. Bayes "Given
that" A, B
=events
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
1/
8
, c207 OA STUDY GUIDE
8. Regression Relationship, correlation, R-Square, scatter plot
Key-words:
9. R-square
strength of the relationship; 0 Weaker to 1 Stronger relationship
(Good-ness of
fit) Key-
words:
The dependent variable is binary (Yes/NO or On/Ott)
10. Logistic
Regres-sion:
11. Linear Uses Constraints and keywords that are associated with the letter "M". Mix,
Program- minimize, maximize, optimize
ming:
12. 2-Sample T-Test: Ditterence among 2 data sets that measure the same thing; use a bar
chart
13. ANOVA: Ditterence among three or more (Another) that measure the same thing;
use a
bar chart
14. Chi-Square: Ditterence in Counts/frequency of Categorical data
15. Cross-OVer: Options and Volume
16. If p-Value is Significant
Small-er than
0.05, then...
17. Pareto Chart orders from highest to lowest frequencies to show importance
18. Cluster Chart Form natural groupings/cluster
19. Balanced FLIC = Financial, Learning/Innovation, Internal Business Processes,
Score-card and Cus-tomer
keywords:
2/
8
Nominal Just Names that can be counted Whole number, count, or total (color of eyes, type of
vehicle)
1. Ordinal Names that can be placed in an order and then
counted Whole number, count, or total
(top 10 football teams, satisfaction levels)
2. Interval Numbers that have equal intervals and an order, but no true zero
Can be added and subtracted (NOT
multiplied/divided) (shirt size, dates, times)
3. Ratio Numbers that have equal intervals and an order, but also have a true
zero Can be added, subtracted, multiplied, divided, and ratioed
(percentages, money, rates)
4. Normal 68.3 % of data within 1 σ of the mean
Distribu- 95.4 % of data within 2 σ of the mean
tion/Bell
99.7 % of data within 3 σ of the mean
Curve
5. Intersection "And, Both, All, Every, In a row"
MULTIPLICATION
6. Union "Or, Either,
Other"
ADDITION
7. Bayes "Given
that" A, B
=events
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
1/
8
, c207 OA STUDY GUIDE
8. Regression Relationship, correlation, R-Square, scatter plot
Key-words:
9. R-square
strength of the relationship; 0 Weaker to 1 Stronger relationship
(Good-ness of
fit) Key-
words:
The dependent variable is binary (Yes/NO or On/Ott)
10. Logistic
Regres-sion:
11. Linear Uses Constraints and keywords that are associated with the letter "M". Mix,
Program- minimize, maximize, optimize
ming:
12. 2-Sample T-Test: Ditterence among 2 data sets that measure the same thing; use a bar
chart
13. ANOVA: Ditterence among three or more (Another) that measure the same thing;
use a
bar chart
14. Chi-Square: Ditterence in Counts/frequency of Categorical data
15. Cross-OVer: Options and Volume
16. If p-Value is Significant
Small-er than
0.05, then...
17. Pareto Chart orders from highest to lowest frequencies to show importance
18. Cluster Chart Form natural groupings/cluster
19. Balanced FLIC = Financial, Learning/Innovation, Internal Business Processes,
Score-card and Cus-tomer
keywords:
2/
8
