Which of the Designs Below Would Be Best Suited to ANCOVA

question 16

Multiple Choice

Which of the designs below would be best suited to ANCOVA?

• A)Participants were randomly allocated to one of two stress management therapy groups, or a waiting list control group.The researcher was interested in the relationship between the therapist's ratings of improvement and stress levels over a 3-month treatment period.
• B)Participants were allocated to one of two stress management therapy groups, or a waiting list control group based on their baseline levels of stress.The researcher was interested in investigating whether stress after the therapy was successful partialling out their baseline anxiety.
• C)Participants were randomly allocated to one of two stress management therapy groups, or a waiting list control group.Their baseline levels of stress were measured before treatment, and again after 3 months of weekly therapy sessions.
• D)Participants were randomly allocated to one of two stress management therapy groups, or a waiting list control group.Their levels of stress were measured and compared after 3 months of weekly therapy sessions.

---

Definitions:

Alternating Copolymer

A copolymer where two different monomers are linked in an alternating sequence, offering unique properties compared to random or block copolymers.

Addition Polymer

This type of polymer is formed by the addition reaction between monomers with double or triple bonds, leading to a long chain molecule without the elimination of small molecules such as water.

Condensation Polymer

A type of polymer formed by the reaction of monomer units with the loss of a small molecule, such as water, leading to the formation of a longer chain.

Polymer Backbone

The Polymer Backbone is the longest series of connected atoms that constitute the main structure of a polymer chain.