app_question_statistics

0 rows


Description

Statistics for individual questions used in an activity.

Columns

Column Type Size Nulls Auto Default Children Parents Comments
id bigserial 19 nextval('app_question_statistics_id_seq'::regclass)
hashcode varchar 40 ''::character varying
timemodified int8 19 null
questionid int8 19 null
slot int8 19 null
subquestion int2 5 null
variant int8 19 null
s int8 19 0
effectiveweight numeric 15,5 null
negcovar int2 5 0
discriminationindex numeric 15,5 null
discriminativeefficiency numeric 15,5 null
sd numeric 15,10 null
facility numeric 15,10 null
subquestions text 2147483647 null
maxmark numeric 12,7 null
positions text 2147483647 null
randomguessscore numeric 12,7 null

Indexes

Constraint Name Type Sort Column(s)
app_quesstat_id_pk Primary key Asc id

Relationships