lOMoARcPSD|44532475
Study Guide for Quantitative Analysis for Business - C723
Quantitative analysis for business (Western Governors University)
Scan to open on Studocu
Studocu is not sponsored or endorsed by any college or university
Downloaded by madiba South Africa stuvia ()
, lOMoARcPSD|44532475
Study Guide for Quantitative Analysis for Business
1. Qualitative vs. Quantitative Studies
● Quantitative Studies: Focus on numerical data. Examples include surveys with
numerical scales, statistical analyses, or experiments with measurable outcomes.
● Qualitative Studies: Focus on non-numerical data, such as opinions, interviews, or
open-ended survey responses.
● Tips: Identify the data type in a question; numbers = quant, opinions/words = qual.
2. Y-hat Equation
● Formula: Y=^a+b1x1+b2x2+b3x3Y\hat = a + b_1x_1 + b_2x_2 +
b_3x_3Y=^a+b1x1+b2x2+b3x3
1. a: Constant (always provided in the question).
2. b: Coefficients for the variables (x1,x2,x3x_1, x_2, x_3x1,x2,x3).
3. x: Values for the respective variables.
● Steps to Solve:
1. Plug in the values for aaa, bbb, and xxx.
2. Remember order of operations (multiplication before addition).
3. Simplify to get the result.
● Tip: Keep track of variable pairs bnb_nbnand xnx_nxncarefully to avoid errors.
3. Probabilities
● Key Concept:
○ For independent events: Add probabilities.
○ Example: If A=10%A = 10\%A=10% and D=25%D = 25\%D=25%, the probability
AAA and DDD happen = 10%+25%=35% 10\% + 25\% = 35\%10%+25%=35%.
○ Use decimal equivalents for percentages (e.g., 10%=0.1010\% = 0.1010%=0.10).
● Tip: If asking about the probability of a single event, just use the percentage directly.
4. Expected Values
● Formula: E(X)=∑(Probability×Value)E(X) = \sum (Probability \times
Value)E(X)=∑(Probability×Value)
Downloaded by madiba South Africa stuvia ()
Study Guide for Quantitative Analysis for Business - C723
Quantitative analysis for business (Western Governors University)
Scan to open on Studocu
Studocu is not sponsored or endorsed by any college or university
Downloaded by madiba South Africa stuvia ()
, lOMoARcPSD|44532475
Study Guide for Quantitative Analysis for Business
1. Qualitative vs. Quantitative Studies
● Quantitative Studies: Focus on numerical data. Examples include surveys with
numerical scales, statistical analyses, or experiments with measurable outcomes.
● Qualitative Studies: Focus on non-numerical data, such as opinions, interviews, or
open-ended survey responses.
● Tips: Identify the data type in a question; numbers = quant, opinions/words = qual.
2. Y-hat Equation
● Formula: Y=^a+b1x1+b2x2+b3x3Y\hat = a + b_1x_1 + b_2x_2 +
b_3x_3Y=^a+b1x1+b2x2+b3x3
1. a: Constant (always provided in the question).
2. b: Coefficients for the variables (x1,x2,x3x_1, x_2, x_3x1,x2,x3).
3. x: Values for the respective variables.
● Steps to Solve:
1. Plug in the values for aaa, bbb, and xxx.
2. Remember order of operations (multiplication before addition).
3. Simplify to get the result.
● Tip: Keep track of variable pairs bnb_nbnand xnx_nxncarefully to avoid errors.
3. Probabilities
● Key Concept:
○ For independent events: Add probabilities.
○ Example: If A=10%A = 10\%A=10% and D=25%D = 25\%D=25%, the probability
AAA and DDD happen = 10%+25%=35% 10\% + 25\% = 35\%10%+25%=35%.
○ Use decimal equivalents for percentages (e.g., 10%=0.1010\% = 0.1010%=0.10).
● Tip: If asking about the probability of a single event, just use the percentage directly.
4. Expected Values
● Formula: E(X)=∑(Probability×Value)E(X) = \sum (Probability \times
Value)E(X)=∑(Probability×Value)
Downloaded by madiba South Africa stuvia ()
