Name Stat 300 (LRC tutor help ok) Score: /20 Instructor: Matt Mitchell Chapter 2 Quiz Due on Section 2-2 1. Identify the class width, class midpoints, and class boundaries for the following frequency distribution. Class width = Daily Precipitation (Inches) Frequency Class midpoints = 0.00-0.49 31 0.50-0.99 1.00-1.49 NOW Class boundaries = 1.50-1.99 2.00-2.49 2.50-2.99 Remember that every class has a boundary on each side of it. A negative boundary is ok.) 2. The following data values are the actual low temperatures recorded near the author's home. Construct a frequency distribution beginning with a lower class limit of 39 and use a class width of 6. Temperatures (OF) from Sept 1 to Oct 5: Temperature Frequency Relative Frequency 54 54 63 50 64 51 59 61 68 62 (round to tenths of a %) 53 52 56 56 54 64 62 55 48 40 47 49 53 51 54 58 48 61 57 53 43 46 44 39 43 3. Compare the frequency distributions in Exercise 1 (given) and Exercise 2 (you constructed). How does the shape of the data distributions differ (how would the shape of the histograms differ)? Section 2-3 4. Use the frequency distribution for the low temperatures from Exercise 2 to construct a histogram and next to it a relative frequency histogram. Label the horizontal axes with class boundaries. Histogram Relative Frequency Histogram