Variable compared

Percentage

Proportionword

Proportion notation

Pie chart

Mix


Mean (SD)

2.37 (0.92)

1.92 (1.20)

1.88 (1.28)

2.70 (0.78)

1.29 (1.00)

Verbal label

>

>

>

<

>


p = .530

p = .001*

p < .001*

p = .005

p < .001*


r = .06

r = .34

r = .35

r = .27

r = .63

Percentage
 
>

>

>

>

 
p = .005

p = .002*

p < 001*

p < .001*

 
r = .27

r = .30

r = .34

r = .59

Proportion – word
  
>

<

>

  
p = .610

p < .001*

p < .001*

  
r = .05

r = .53

r = .48

Proportion – notation
   
<

>

   
p < .001*

p < .001*

   
r = .50

r = .41

Pie chart
    
>

    
p = .001*

    
r = .72

 * Significant at p =< .003 level (Bonferroni correction)