In a study of mother-infant interaction, mothers are rated by trained observers on the quality of their

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In a study of mother-infant interaction, mothers are rated by trained observers on the quality of their interactions with their infants. Mothers were classified on the basis of whether this was their first child (primiparous versus multiparous) and whether the infant was lowbirthweight

(LBW) or full-term (FT). (Full term generally means normal birth weight.)

The data represent a score on a 12-point scale, on which a higher score represents better mother-infant interaction.

Primip/LBW 6 5 5 4 9 6 2 6 5 5 Primip/FT 8 7 7 6 7 2 5 8 7 7 Multip/LBW 7 8 8 9 8 2 1 9 9 8 Multip/FT 9 8 9 9 3 10 9 8 7 10 Run and interpret the appropriate analysis of variance.

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