BooksDunn · 2015
Experimentation for Improvement: the module quizzes
- Matches
- Very close
- Differs
Factorial gives the source's answers. Where they differ, this page says why: some are misprints in the source.
Examples
Each example, and how closely Factorial gives its answers.
Elsewhere
- Bread dough left to rise for an hour: type of sugar S and water temperature TQuiz questionMatches
- Amir's yogurt: fat content of the starter yogurt F and fermentation time TQuiz questionMatches
- Geoffrey's climb up the mountain: bicycle type A and cycling position BQuiz questionMatches
- Geoffrey's climb up the mountain: bicycle type A, cycling position B and extra weight CQuiz questionMatches
- Antowan's spinach seeds: amount of water W and sunlight S, and their interaction plotQuiz questionMatches
- The popcorn: cooking time A and popcorn type B, yellow corn coded lowQuiz questionMatches
- Pea plants: amount of soil A and daily water B, and the prediction at the baselineQuiz questionMatches
- Reactor yield: jacket temperature T and amount of additive D, and their interactionQuiz questionMatches
- Departure wait times at Hamilton airport: check-in staff C, kiosk staff K and security staff SQuiz questionMatches
- The cook's soup pots: amount of water W and size of pot P, a destructive interaction on boiling timeQuiz questionMatches
- A golfer's drive: tee height T, holes played H, club C and time of day D, sixteen runsQuiz questionMatches
- Priya's 5 km run: stretching A, warm up B and water C, and a ninth run at the centreQuiz questionMatches
- Michael's boiling water: amount A, lid B and pot size C, eight runs and three moreQuiz questionMatches
- The hospital's flu study: hand-washing demonstration H, information I and sanitizer SQuiz questionMatches
- Marlissa's accounting sections: delivery D, attempts N and practice quiz P, eight runs and two moreQuiz questionMatches
- Aditi's breaded chicken strips: cooking duration D, oven rack R and preheating PQuiz questionMatches
- Robert's fuel economy: tire pressure A, air conditioning B, route C and cargo D, with D = ABCQuiz questionMatches
- Jordan's amusement park: rides open R, food advertising F and staff per ride P, with P = RFQuiz questionMatches
- Emil's reactor: feed F, jacket temperature T and agitator speed S, and its two half fractionsQuiz questionMatches
- Hiro's 400 m individual medley: six training factors in eight runs, D = AB, E = AC, F = BCQuiz questionDiffers
- Jason's 1 km run: warm up A, water B and time of day C; the half fractions C = AB and C = -ABQuiz questionMatches
- Ghassan's concrete: water A, cement B and additives C in four runs, with C = ABQuiz questionMatches
- Cake ovens: baking temperature A, mixing speed B and baking time C in four runs, with C = ABQuiz questionMatches
- Arif's summer electricity use: thermostat setting A and window blinds B, and two runs beyond the cubeQuiz questionMatches
- Michael's mistakes on stage: practice hours P, sleep S and dinner D, and a ninth run at the centre of P and SQuiz questionMisprint found
- Rishat's cut roses: sugar S and vodka V in the vase water, a centre point, and a sixth run in VQuiz questionMatches
- Cake ovens: baking temperature A, baking time B and mixing speed C, the half fraction C = AB, and a step toward the optimumQuiz questionMatches
- Cake ovens near the optimum: baking temperature A from 357.5 to 370 °F and time B from 20 to 25 min, and the axial runs of a CCDQuiz questionMatches
- Wind turbine power: rotor diameter D and tensile strength T in a central composite design, and its optimumQuiz questionMatches
- Nathan's beer: malt M and hops H in a 2^2 factorial with a centre point, then a central composite designQuiz questionVery close
- Soil solarization: period P and plastic thickness T, then a centre point and a run at 8 weeks in P onlyQuiz questionMatches
- A hospital's microblogging: posts per day N, ratio of original content R and tone T, the half fraction T = NRQuiz questionMatches
- A city's electronics recycling: opening hours H and depot sites S, from 2 to 6 sitesQuiz questionMatches
- An after-school program's enrollment: class length L and program weeks N, and a fifth run outside the cubeQuiz questionMatches
- Francisco's refrigerator: compressor power A, volume B and insulation C, the half fraction C = AB, and a run at 700 WQuiz questionMatches
- Jason's 1 km run: warm up A and water B, a 2^2 factorial with a centre point, and two steps toward the optimumQuiz questionMatches
- A 200 m sprinter's training: time of day, shoe type and arm position, at two levels eachMatches
- Jeff's chocolate chip cookies: what eight runs allow, in two to five factorsMatches
- Parvin's yogurt: temperature T, sugar S and culture C in four runs, C = TSMatches
- Jennifer's cookies: duration D, temperature T and chips N, blocked on the mixing bowlMatches
- Gatei's gas mileage: air conditioning A, road R, time of day T and oil E, with E = ARTMatches
- Seven factors A to G at two levels: the full factorial and its half fractionMatches
- Philip's bike ride: bike type A, position B and drink C, in a random order; the four rows of a half fractionMatches
- The half fraction in P, Q and R whose aliases are P = QR, Q = PR and R = PQMatches
- Jim's gas mileage: air conditioning A, road R and time of day T, with T = ARMatches
- Antowan's seeds: sunlight A, soil B and water C in four runs, with C = ABMatches
- Five factors in eight runs: the quarter fraction with D = AB and E = ACMatches
- Sandip and Daniele's toy cars: material M, wing length L and stabilizers W, blocked on two 3D printersMisprint found
- Jeff's cookies in six factors A to F and eight runs: the 2^(6-3) fractionMatches
- Beach safety: six factors A to F, one week a runMatches
Misprints
Misprints found in the source, by page. Each shows what the source prints and what its own data give.
Coefficient: Interceptquiz Quiz for module 5A, question 3
Book 17.75Data 12.00
The explanation's code predicts with 17.75 - 6x - 3x^2, which is not the quadratic fit of these runs (12 - 5.5x - 2x^2, the option keyed correct); it reads as left over from another version of the question; the fit gives 12
Coefficient: P²quiz Quiz for module 5A, question 3
Book -3Data -2
The explanation's code predicts with 17.75 - 6x - 3x^2, which is not the quadratic fit of these runs (12 - 5.5x - 2x^2, the option keyed correct); it reads as left over from another version of the question; the fit gives -2
Standard orderquiz Ungraded practice quiz 4: part 2, question 5
Book rows 8, 3, 5, 2, then 6, 7, 4 and 3Data 8, 3, 5, 2, 6, 7, 4, 1
A typo in the explanation: the last run (carbon fibre, short, no) is row 1 of the standard order, so the list is 8, 3, 5, 2, 6, 7, 4, 1; row 3 is already the second run