Which calculation is necessary for figuring the chi-square statistic?
A) dividing the absolute differences between observed and expected frequencies by the expected frequency in each cell
B) dividing the absolute differences between observed and expected frequencies by the observed frequency in each cell
C) dividing the squared differences between observed and expected frequencies by the expected frequency in each cell
D) dividing the squared differences between observed and expected frequencies by the observed frequency in each cell
C
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Kirk is a strong Republican who voted for Mitt Romney in 2012 . Based on research by Regan and Kilduff (1988), when should Kirk have felt most confident about Romney's chances for winning the 2012 election?
a. right before voting b. in the voting booth c. right after voting d. months before the election
Alpha motor neurons receive input from
A. neurons in muscle spindles only. B. neurons in muscle spindles and Golgi tendon organs. C. spinal interneurons and neurons of the brainstem and motor cortex. D. neurons in muscle spindles and Golgi tendon organs, neurons of the brainstem and motor cortex, and spinal interneurons.
According to Thomas and Chess, a child that is very irregular in sleeping and eating, resists change, and tends to be loud is labeled a(n) __________ child
a) easy b) difficult c) slow-to-warm-up d) negative
Which of the following statements about the field of lifespan development is untrue?
A) The field is scientific in nature. B) Professionals in this field often assess change in people over time. C) Most professionals conduct basic research and do not engage in applied work or interventions. D) Increasingly, professionals in this area are collaborating with other professionals with different backgrounds.