AND STATISTICS PEREGRINE STUDY GUIDE
2026 VERIFIED QUESTIONS AND CORRECT
ANSWERS GRADED A+
⩥ mean. Answer: the arithmetic average of a distribution, obtained by
adding the scores and then dividing by the number of scores
⩥ Median. Answer: the middle score in a distribution; half the scores are
above it and half are below it
⩥ Mode. Answer: the most frequently occurring score(s) in a
distribution
⩥ negatively skewed. Answer: a distribution of scores in which scores
are concentrated in the high end of the distribution
⩥ no skew. Answer: mean = median = mode
⩥ positively skewed. Answer: a distribution of scores in which scores
are concentrated in the low end of the distribution
, ⩥ _________ statistics is a body of methods used to draw conclusions or
inferences about characteristics of populations based on sample data..
Answer: : Inferential
⩥ A ___________ is a set of data drawn from a population.. Answer:
sample
⩥ A descriptive measure of a population is a ___________ and a
descriptive measure of a sample is a _____________.. Answer:
parameter, statistic
⩥ The simplest method of obtaining data is by ________________..
Answer: direct observation
⩥ key design principles for a questionnaire. Answer: 1. Keep the
questionnaire as short as possible. Most people are unwilling to spend
much time filling out a questionnaire.
2. Ask short, simple, and clearly worded questions to enable respondents
to answer quickly, correctly, and without ambiguity.
3. Start with demographic questions to help respondents get started and
become comfortable quickly.
4. Use dichotomous (yes/no) and multiple choice questions because of
their simplicity.
5. Use open-ended questions cautiously because they are time
consuming and more difficult to tabulate and analyze.