EXAM | QUESTIONS AND ANSWERS |
2025 NEW UPDATE | GUARANTEED
PASS
Steps to the analytic process
ANSWER ✔✔ 1. identify business problem
2. data collection
data types
use all data or random sample
3. past/what has happened
4. predict what will happen
Quantitative data
ANSWER ✔✔ numerical data that can be measured, must have units, continuous or discrete
Categorical/qualitative data
ANSWER ✔✔ describes things, categorized based on traits or characteristics that can be
counted, open-ended questions, ordinal or nominal
Nominative data
ANSWER ✔✔ qualitative variable that has no meaningful order to the categories
EX: gender or car color
Ordinal data
ANSWER ✔✔ qualitative variable, order matters
ex: clothing size, college class-men
, Convenient sampling
ANSWER ✔✔ is a sample in which the individuals are easily obtained and not based on
randomness
Voluntary sampling
ANSWER ✔✔ individuals are self-selected by responding to an incentive
Undercoverage
ANSWER ✔✔ occurs when some groups in the population are left out of the process of
choosing the sample
Stratified random sample
ANSWER ✔✔ a sample from selected subgroups of the target population in which everyone in
those subgroups has an equal chance of being included in the research
Systematic sampling
ANSWER ✔✔ select some starting point and then select every kth element in the population
Cluster sampling
ANSWER ✔✔ A probability sampling technique in which clusters of participants within the
population of interest are selected at random, followed by data collection from all individuals in
each cluster.
Sampling Errors
ANSWER ✔✔ when the sample does not accurately represent the population due to biased
sampling
Coverage bias
ANSWER ✔✔ when the sample does not accurately represent the population due to