MULTIPLE CHOICE (1 point each). 1. As part of a database on new births at a hospital, some variables recorded are the age of the mother, marital status of the mother (single, married, divorced), the weight of the baby, and gender of the baby. Of these variables A) age, marital status, and weight are quantitative variables. B) age and weight are categorical variables. C) gender and marital status are categorical variables. D) gender, marital status, and age are categorical variables. The following question was asked of a sample of Math 104 students: How many hours do you spend studying each week? The responses were recorded as numbers, e.g., 3.0, 4.5, 9.0, 6.7. Which ofthe following graphs should NOT be used to describe the resulting data? A) Stern and Leaf C) Boxplot B) Histogram D) Pie Chart . This is a standard deviation contest. Which of the following sets of four numbers has the smallest possible standard deviation? A) 7, 8, 9,10 C) 5, 5, 5,5 B) 0, 0,10,10 D) 0, 1, 2, 3 10. An instructor asked students to name their favorite color. An appropriate graph to display the data is a A) Histogram C) Boxplot B) Time plot D) Pie Chart The percent of observations above the third quartile in any distribution is A) 25%. C) 50%. B) 75%. D) none of the above. Which of the following measures are NOT affected by outliers? A) Mean. B) IQR. C) Standard deviation. D) Range. Which one of the following measures is NOT a measure of variability? A) Mean. C) Standard deviation. B) IQR. D) Range. A teacher gave a multiple-choice test with 25 questions. After scoring the tests, she computed the mean and standard deviation of the scores. The standard deviation was 0. Based on this information, A) all the students had the same score. B) she must have made a mistake. C) about half the scores were above the mean. D) none of the above