Basic Stats 1

• Mean - Sum of all values
• Median - Middle number when arranged in increasing or decreasing order
• Mode - number that occurs the most
• Unimodal - One value that kept occuring
• Bimodal - Two values that occurs the most
• Multimodal - Multiple values that occurs the most
• Mean: summation of all scores divided by n (number of frequency
• Median: add two midpoints divided by two
• fx: frequency x class mark
• lbmc - lower boundary median class
• fmc - frequency of median class
• cf - cumulative frequency before the median class
• w - class width
• lbmo - lower boundary modal class
• Pie graph - Percentage
• Line graph - Rising and falling of a data.
• Bar graph - frequency and class.
• Histogram - Bars are always vertical, and has no gaps between each bars. 
• Ogive - Cumulative.
• Range - Largest Frequency - Smallest frequency
• Variance - Summation (x-mu)^2 divided by N
• Standard Deviation - The square root of the variance.
• Discrete - can be counted
• Continuous - has infinite data
• Secondary data - old
• Observing - reaction
• Testing - Ability
• Interview - life experiences.
• Experiment - manipulate
• Questionnaire - survey
• Nominal - Simple picking/naming
• Ordinal - ranking
• Interval - temperature
• Ratio - test
• Systematic - has a desired sample size.
• Stratified - group leaders (1)