Mean, median, mode, dispersion

Question 1

tendency

Answer 1

= mean, median, mode

Question 2

what is the mean

Answer 2

• add up all numbers and divide by number of numbers
• value: middle score

Question 3

what is the mode

Answer 3

• score that appears most frequently
• if has multipal scores its bimodal
• measure: may not reflect the datas overall distribution, dosent provide clear picture if there are any modes

Question 4

what is the dispersion

Answer 4

• indicates how spread out your data is
• key measures include range and standard deviation
• measure: range difference between high and low, easy to calculate

Question 5

what is standard deviation

Answer 5

• shows how much values deviate from the mean
• calculated by using all data points
• low standard devaition means reults were clustered around mean so everyone scored consistently
• high standard devaition means results were very spread out

Question 6

ratios

Answer 6

• simplify using highest comon factor to lowest form of ratio