measures of ..

Question 1

define measures of central tendancy

Answer 1

concentration of data around central data

Question 2

WHAT are the three meaures of central tendancy

Answer 2

mean median mode

Question 3

what is the defenition for mean media and mode

Answer 3

median- central value of data in numerical order
mean- avargae of data
mode- the data that appears the most

Question 4

what is a strength and weakness of mean

Answer 4

strength- includes all the data so conclusions drawn are representative
weakness- average is affected by outliers conclusions may be affected

Question 5

what is a strength and weakness of the median

Answer 5

strength - not impacted by outliars so accurate conclusions can be drawn
weakness - doesn’t include all the data so conclusions drawn unrepresentative

Question 6

what is a strength and weakness of the mode

Answer 6

strength- not affected by outliairs so accurate conclusions can be drawn
weakness- doesn’t include all the data only the most common so conclusions drawn unrepresentative

Question 7

define measures of disspersion

Answer 7

spread of data around measures of central tendancy

Question 8

what are the measures of dispersion

Answer 8

standered deviation
range

Question 9

define standared diviation

Answer 9

the spread of data around the mean, the higher the data the more spread out

Question 10

what is a strength and weakness of standard deviation

Answer 10

strength - uses all the data and is unaffected by outliars meaning conclusions drawn are valid
weakness-can be afftected by ouliars

Question 11

what is a strength and weakness of range

Answer 11

strength- it helps to see the dispersion of data meaning it is good to draw accurate conclusions from
weakness - only uses two figures and so is not representative

Question 11

define the range

Answer 11

diff between the biggest and smallest value