PSY 689 Week 1 Assignment | Measures of Central Tendency Assignment | 2025 Update with complete solutions.

PSY 689 Week 1 Assignment | Measures of
Central Tendency Assignment | 2025 Update
with complete solutions.




Central Tendency ...ANSWER...-Describe the middle or central characteristics of a data
set
-When you know the middle of the data set you can compare other values to it
3 measures of central tendency: mean, median, and mode

Mean ...ANSWER...-Arithmetic average
-Considers the number of scores and their values
-Most sensitive of all the measures of central tendency
-Basis for additional calculations
-Most appropriate measure of central tendency for ratio and interval data
-Affected by outliers
-Precision of mean should not exceed the precision of the data by more than one
decimal position

Mode ...ANSWER...-Score that occurs most frequently in a data set
-Found by visual inspection or by putting "Mode" in the formula box on Excel
-Score with the highest value in the frequency column in a simple frequency or a
grouped frequency
-Could be bi-modal or multi-modal

Advantages/Disadvantages of Mode ...ANSWER...Advantages
-Easily determined
-Quick estimate of the center of the group
-Describes central tendency of the data

Disadvantages
-Unstable
-Terminal statistic
-Disregards extremes

Median ...ANSWER...-Middle score in a list of scores
-Score associated with the 50th percentile
-In a sample with an odd number of values, it is the middle number