omar has developed an intervention to improve the relationship between parents and their preschool-aged children. to evaluate the effectiveness of his intervention, omar video-records parents interacting with their children and has two research assistants score the level of warmth in each interaction. omar then compares the two sets of scores to examine – reliability. he finds a high positive correlation of – between the two raters’ scores. if the observers were rating a categorical variable, omar could have also looked at the – statistic.
two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.
the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.
the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.