Outliers can change the ______ of a correlation.
A. direction
B. strength
C. sign (+, –)
D. all of these
Ans: D
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Who writes that today no single administrator or teacher is expected to possess all the expertise and bear all the responsibility necessary for managing learning?
a. Lave and Wenger (1991) c. Wenger (2006) b. Elmore (2000) d. ISTE (2008)
When a survey is conducted using a cohort study:
a. a specific population is sampled at each data collection point. b. a general population is sampled at each data collection point. c. the same sample is used at all data collection points. d. all data are collected at the same time.
Answer the following statement(s) true (T) or false (F)
Students will learn best when learning opportunities are natural.
According to Jean Piaget, in the _____ stage of cognitive development, the learner no longer requires concrete objects to make rational judgements
A) sensorimotor B) preoperational C) concrete operational D) formal operational