MEAN MEDIAN MODE Flashcards
It is a branch of Mathematics which involves collecting, organizing, summarizing, presenting, analyzing, and interpreting data
Statistics
- the branch which involves collection, organization, summarization, and presentation of data.
Descriptive Statistics
- the branch that interprets and draws conclusions from the data
Inferential Statistics
it is used to locate the center of the set of data.
it is a single value that attempts to describe a set of data by identifying the central position within the set of data.
it is also called as measures of central location
mean, median, and mode are all valid measures of central tendency, under different conditions
Measures of central tendency
is the entire group under consideration in a situation.
Population
is a subset of the population; also called as the:
Sample
• The __ of n numbers is the sum of the numbers divided by n.
Mean
Mean formula
Σχ/n
is the middle number or the mean of the two middle numbers in a list of numbers that have been arranged in numerical order from smallest to largest or largest to smallest.
Median
The middle number if n is .
Odd
The mean of the two middle numbers if n is .
Even
is the number that occurs most frequently.
Mode
is often used when some data values are more important than the others.
Weighted Mean
1 mode
Unimodal
2 modes
Bimodal
3 modes or more
Multimodal
Weighted mean formula
Weighted mean = £(w*x)/£w
