Grade 12 box and whisker revision quiz

the following are characteristics of range/die volgende is einskappe van

• only measures the spread between high and low values

• accurate representation of the spread of values

• dui die verskil tussen die boonste kwartiel en onderste kwartiel aan/ gives the difference between the third quartile and 1st quartile

• can create misleading impression of data

When we divide data in 4 groups and each groups represents 25%, it is called a.....

/ As ons data in 4 groepe verdeel en elke groep verteenwoordig 25% noem ons dit `n ............

(a)  

True or False

The median is the same as Q2/

Die mediaan is dieselfde as Q2

• True

• False

the median is the ....

• biggest value minus smallest value

• middlemost value when data is arranged in ascending or descending order

• value that occurs the most

the mean is the....

• Q3-Q1

• grootste waarde - kleinste waarde

  biggest value- smallest value

the range is

• An outlier minus Q1

  `n uitskieter - Q1

• Q1 to Q3

• middlemost value

• biggest value -smallest value

  grootste waarde - kleinste waarde

The 90 th percentile and the (a)   quartile are the same.

the (a)   percentile and the median are the same

true or false

We use quartiles rather than percentiles as measures of spread of large sets of data /

Ons gebruik eerder kwartiele as persentiele om die verspreiding van groot datastelle aan te dui.

• True

• False

the interquartile range is..... inches

• 2,5

• 4.5

• 11

• 2