Stats (4th QUARTER) Flashcards
It is a tendency of a group to cluster around a central point.
Central Tendency
A value of which can be used to describe or to represent the entire set.
Central Tendency
The most familiar average. It is the sum of the observations divided by the total number of observations.
Mean
It is mostly affected by extreme values or outliers in a data set.
Mean
It is frequently used in finding the final grade.
Weighted Mean
In a simple arithmetic mean, you just add up all the values and divide by the number of data points. In a ________ ____, you multiply the values by a certain factor that is based on some other criterion to give
more ‘weight’ to some values than others.
Weighted Mean
It is the middlemost value in a data set.
Median
It divides the data set into two equal parts, half of them smaller than the ______, and the other half, larger.
Median
It is unaffected by extreme values.
Median
It is the value that most frequently occurs in a data set.
Mode
2 Types of Data in Central Tendency
Grouped Data
Ungrouped Data
Raw data
Ungrouped Data
A set of data arrange in frequency distribution table
Grouped Data
It is the class with the less than cumulative frequency greater than or equal to one-half of the total frequency.
Median Class
The class interval where the value with the highest frequency occurs.
Modal Class
The simplest measure of variability. However, its simplicity fails to show any clustering of scores and is greatly affected by an outlier.
Range
The _____ of a set of data is the difference between the largest and the smallest data.
Range
Is the spread between numbers in a data set.
Variance
It is a statistical measurement used to determine how far each number is from the mean and from every other number in the set.
Variance
It is a measure of how dispersed the data is in relation to the mean.
Standard Deviation
It tells us what the average scatter of values is, around the mean.
Standard Deviation
