MATHETICS

• Median - this seperate an ordered set into two equal parts
• Mean - The average of a set of numbers. It is the sum of the numbers divided by the number of numbers.
• Data - information coming from obeservation
• sample - an items that is chosen from population
• statistics - the science of collectiong, clarifying, organizing, etc to draw confusions
• measures of positon - statisticals values that dividea set of data into equal groups.
• percentile - nine score points that divided a ranked data into hundred equal
• decile - divide a ranked data into ten equal parts
• quartiles - divide a set of data into four equal parts
• lower quartile - Q1 = 1/4 (n+1)
• upper quartile - Q3 = 3/4 (n+1)
• middle quartile - Q2 = 1/2 (n+1)
• formula - d1 = k/10 (n+1)
• formula decile - Dk = k/10 (n+1)
• frequency distribution - a total numbers of observations or frequencies over arbitarily defines classes or categories