RESEARCH STATISTICS TEST |
QUESTIONS AND THEIR CORRECT
SOLUTIONS | RATED 100% ACCURATE |
2025 UPDATE.
Q: What is Chapter 3 about?
ANSWER ✔✔ Descriptive Statistics, Probability, and Measure of Central Tendency
Q: What are descriptive statistics used for?
ANSWER ✔✔ Computed to reveal characteristics of the sample and to describe study
variable
Q: How do you describe a sample in statistics?
ANSWER ✔✔ Create a frequency distribution of the variable being studied; plot values on
the x-axis and tallies on the y-axis
Q: What are inferential statistics used for?
ANSWER ✔✔ To draw conclusions and make inferences about the greater population
based on the sample data set
Q: What does bi-modal mean?
ANSWER ✔✔ Having two values/categories with the highest and equal frequencies
Q: What is central tendency?
ANSWER ✔✔ Indicator of the center of data; nominal variable = categorical differences
(e.g., gender)
, Q: What are the measures of central tendency?
ANSWER ✔✔ Mean, median, and mode
Q: Define mean.
ANSWER ✔✔ Arithmetic average of all values; requires interval or ratio data
Q: Define median.
ANSWER ✔✔ Middle value when data is ordered; used for ordinal, interval, or ratio data
Q: Define mode.
ANSWER ✔✔ Most commonly occurring value; can have more than one
Q: What does multimodal mean?
ANSWER ✔✔ Having more than two modes
Q: What does unimodal mean?
ANSWER ✔✔ Distribution has only one mode
Q: What does a bimodal distribution suggest?
ANSWER ✔✔ Population may not be well-defined
Q: What is the range?
ANSWER ✔✔ Difference between maximum and minimum values in a distribution
Q: What is probability?
ANSWER ✔✔ Chance that a particular outcome will occur; long-run relative frequency