Which step defines the problem in model building
\r\n","choices":[{"text":"Step 1
\r\n","value":"A"},{"text":"Step 2
\r\n","value":"B"},{"text":"Step 3
\r\n","value":"C"},{"text":"Step 4
\r\n","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065739,"question":"What is statistical modeling used for.
\r\n","choices":[{"text":"Predict
\r\n","value":"A"},{"text":"Collect
\r\n","value":"B"},{"text":"Store
\r\n","value":"C"},{"text":"Design
\r\n","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065738,"question":"When is data removal acceptable
\r\n","choices":[{"text":"When many rows are missing
\r\n","value":"A"},{"text":"When only a few rows are missing
\r\n","value":"B"},{"text":"Always
\r\n","value":"C"},{"text":"Never
\r\n","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065737,"question":"What technique estimats missing values using average.
\r\n","choices":[{"text":"Impulation
\r\n","value":"A"},{"text":"Interpolation
\r\n","value":"B"},{"text":"Flagging
\r\n","value":"C"},{"text":"Removal
\r\n","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065735,"question":"Data cleaning involves
\r\n","choices":[{"text":"Adding more data
\r\n","value":"A"},{"text":"Removing errors and inconsistencies
\r\n","value":"B"},{"text":"Creating charts
\r\n","value":"C"},{"text":"Writing reports
\r\n","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065734,"question":"What is the first step after collecting data.
\r\n","choices":[{"text":"Visualization
\r\n","value":"A"},{"text":"Data preparation
\r\n","value":"B"},{"text":"Modeling
\r\n","value":"C"},{"text":"Presentation
\r\n","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065733,"question":"Which method is best for understanding customer preferecnes.
\r\n","choices":[{"text":"Survey
\r\n","value":"A"},{"text":"Observation
\r\n","value":"B"},{"text":"Experiment
\r\n","value":"C"},{"text":"Case Study
\r\n","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065732,"question":"Which method allows researchers to understand cause eand effect relationships
\r\n","choices":[{"text":"Survey
\r\n","value":"A"},{"text":"Observation
\r\n","value":"B"},{"text":"Experiment
\r\n","value":"C"},{"text":"Focus group
\r\n","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1065731,"question":"Testing changes under controlled conditions is known as.
\r\n","choices":[{"text":"Experiment
\r\n","value":"A"},{"text":"Survey
\r\n","value":"B"},{"text":"Observation
\r\n","value":"C"},{"text":"Focus group
\r\n","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065730,"question":"Watching and recording behavior without interactio is known as.
\r\n","choices":[{"text":"Observation
\r\n","value":"A"},{"text":"Experiment
\r\n","value":"B"},{"text":"Survey
\r\n","value":"C"},{"text":"Case Study
\r\n","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065729,"question":"Which method involves asking a set of questions to a group
\r\n","choices":[{"text":"Experiment
\r\n","value":"A"},{"text":"Survey
\r\n","value":"B"},{"text":"Observation
\r\n","value":"C"},{"text":"Interview
\r\n","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065728,"question":"In probability , what is the total numebr of outcomes called.
\r\n","choices":[{"text":"Favorable outcomes
\r\n","value":"A"},{"text":"Sample space
\r\n","value":"B"},{"text":"Random events
\r\n","value":"C"},{"text":"Total outcomes
\r\n","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065727,"question":"Probability can be expressed as.
\r\n","choices":[{"text":"Only decimals
\r\n","value":"A"},{"text":"Only percentages
\r\n","value":"B"},{"text":"Fractions, decimals, or percentages
\r\n","value":"C"},{"text":"Only fractions
\r\n","value":"D"},{"value":"E"}],"correctAnswer":3},{"id":1065726,"question":"What is the probability of gatting heads in a fair coin toss.
\r\n","choices":[{"text":"0.5
\r\n","value":"A"},{"text":"0.25
\r\n","value":"B"},{"text":"0.75
\r\n","value":"C"},{"text":"1
\r\n","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065725,"question":"An event with a probability of 0 is
\r\n","choices":[{"text":"Certain
\r\n","value":"A"},{"text":"Impossible
\r\n","value":"B"},{"text":"Likely
\r\n","value":"C"},{"text":"Rare
\r\n","value":"D"},{"value":"E"}],"correctAnswer":2}]