The pie charts show the results of a survey in which undergraduates and postgraduates were asked about the range of books and non-printed materials in their school library.

The pie charts illustrate how

undergraduates

and postgraduates assess satisfactory levels

on

Change preposition

of

show examples

the variety of books and non-printed materials.

Overall

,

while

the majority of

undergraduates

consider two

criterias

Correct your spelling

criteria

to get the highest level of satisfaction, the minority was said to have not up to

expectation

Fix the agreement mistake

expectations

show examples

experience.

Additionally

, satisfied

experience

Fix the agreement mistake

experiences

show examples

had the highest number of feed feedback by

postgraduate

Fix the agreement mistake

postgraduates

show examples

, whilst the opposite case was for not satisfied ones. Regarding the data of the various genres of books, the proportion of

undergraduates

had

Correct pronoun usage

who had

show examples

satisfaction

Add an article

the satisfaction

show examples

and very good experience

were

Change the verb form

was

show examples

relatively similar, about 35%, and the figure for not good

experiences

are

Wrong verb form

was

show examples

lower, at 28%.

However

, half of postgraduates feel the variation of books is not good, which was double that of very good and satisfied feelings, with 22 and 28%. Turning to the non-printed materials,

while

above 60% of

undergraduates

rate the diversity to be very good,

this

percentage was true for the

not good

Add a hyphen

not-good

show examples

experiences

by postgraduates. The percentage of satisfaction for

undergraduates

is almost double the figures for not good

experiences

(20% and 12%), the figures for graduates

was

Correct subject-verb agreement

were

show examples

opposite

Correct article usage

the opposite

show examples

, with 12% for very good and 22% for satisfactory

experiences

.