id: 02331135
dt: a
an: 2000e.03634
au: Watson, Jane M.; Moritz, Jonathan B.
ti: Longitudinal understanding of conditional probability by school students.
so: Truran, John M. et al., Making the difference. , (ISBN 0-9594844-9-2).
522-529 (1999).
py: 1999
pu: ,
la: EN
cc: K53
ut: cross-sectional analyses; longitudinal analyses
ci:
li:
ab: Two survey items asking for estimates of probability or frequency of
conditional events, $(A\vert B)$ and $(B\vert A)$, were completed by
2719 school students in grades 5 to 11. Cross-sectional and
longitudinal analyses revealed improvement with grade in expressing
probability numerically and in distinguishing conditional events.
Conditional events were better distinguished for the frequency item
than the probability item. Comparisons with responses to other
probability items indicated understanding of conditional probability
was related to development of basic chance measurement. (Orig.)
rv: