What Was a Significant Change Made to the CTADS Survey

question 69

Multiple Choice

What was a significant change made to the CTADS survey beginning in 2015 compared to previous years?

• A) Data was collected for residences of the Yukon
• B) The CTADS used cell phones in its sampling frame
• C) Data was collected using an internet questionnaire
• D) Data was collected for residences of the Nunavut

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Definitions:

Control Population

A group in an experimental study that does not receive the treatment and is used as a benchmark to measure how the other tested groups compare.

Significance Level

The threshold below which an observed result is considered statistically significant, usually denoted by alpha.

Sample Data

Data collected from a portion of a larger population, used to make inferences about the whole population.

P-Value

The p-value is a measure in statistical hypothesis testing representing the probability of obtaining a result at least as extreme as the observed one, assuming the null hypothesis is true.