The F-ratio is a ratio of _____ variance over _____ variance
a. between-groups; within-groups
b. within-groups; between-groups
c. total; between-groups
d. total; within-groups
a
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The rods of the retina
a. number about 120 million in each eye and are found mainly in the periphery of the eye. b. are specialized for color sensations and detecting fine details. c. function best in bright light. d. are characterized by all of these.
Many children develop a fear of the dark during the late preschool and early school years, based, in part, on
a. their belief that something really is lurking in the dark. b. their increased experience to situations in which things do lurk in the dark. c. the influence of their friends' telling stories about things that lurk in the dark. d. their ability to generate ideas about what might be lurking in the dark.
Children do not show gains in attention until they are around the age of 12 months.
Answer the following statement true (T) or false (F)
The new fifth-grade teacher just arrived for her orientation session. The principal provided her with information on the class she will begin teaching next week,
including the group results on a state-required achievement test administered at the end of fourth grade. The principal tells the teacher that the students' average score was exactly at their grade level. What question should the teacher ask that will help her evaluate the information she has been given? a) What is the correlation between IQ scores and the state test scores? b) What percentage of the students come from homes that are in the poverty range? c) What is the degree of variability or spread around the average score on that test? d) What do the inferential statistics demonstrate about the scores obtained by this group of students?