IV. Pre-Test Evaluation 1. A normal distribution is: A. Symmetric. B. Unimodal. C. Bell-shaped. D. All of the above 2. A bar graph is usually used with used with data. data while a histogram is A. Interval; nominal B. Ratio; scale C. Nominal; scale D. Nominal; ordinal 3. Imagine a researcher found that 65% of bystanders helped a female who dropped her packages but only 32% helped a male that dropped his packages. What type of graph would be appropriate to display this data? A. Bar graph B. Frequency polygon C. Histogram D. None of the above. 4. If students in a college math class are given an exam intended for middle school math students it would probably result in: A. A positively skewed distribution. B. A ceiling effect. C. A normal distribution. D. All of the above. 5. Professor Arenas recently administered a statistics exam and was surprised to see that the distribution of scores was negatively skewed. What would a negatively skewed distribution indicate for this example? A. That most students did well on the exam but a few did very poorly. B. That students were at the extreme; some did very well and others did very poorly. C. That most students did poorly on the exam but a few did very well. D. That there was very little variation in his class; everyone scored about the same