Solve the Problem. -List All the Ordered Arrangements of 6 Objects A, B

question 81

Multiple Choice

Solve the problem.
-List all the ordered arrangements of 6 objects a, b, c, d, e, and f choosing 2 at a time without repetition. What is P(6, 2) ?

• A) ab, ac, ad, ae, af, bc, bd, be, bf, cd, ce, cf, de, df, ef P(6, 2) = 15
• B) ab, ac, ad, ae, af, ba, bc, bd, be, bf, ca, cb, cd, ce, cf, da, db, dc, de, df, ea, eb, ec, ed, ef, fa, fb, fc, fd, fe P(6, 2) = 30
• C) ab, ac, ad, ae, af, ba, bc, bd, be, bf, ca, cb, cd, ce, cf, da, db, dc, de, df, ea, eb, ec, ed, ef P(6, 2) = 25
• D) aa, ab, ac, ad, ae, af, ba, bb, bc, bd, be, bf, ca, cb, cc, cd, ce, cf, da, db, dc, dd, de, df, ea, eb, ec, ed, ee, ef, fa, fb, fc, fd, fe, ff
• P(6, 2) = 36

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Definitions:

Observer Drift

A phenomenon in which there are gradual changes in the way an observer measures or perceives phenomena over time, leading to inconsistencies.

Reactivity

The change in behaviour often seen when people know they are being observed or filmed. One of the difficulties inherent in in vivo observation and analogue observational settings.

External Validity

The extent to which the results of a study can be generalized to other situations and to other people.

Quasi-Experiment

A research design that lacks the full control of true experimental designs but employs some method of making causal inferences from observed changes.