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1. Complete the table to the right. 2. In one university, language incorporated a 10-week extensive reading program to improve students’ Japanese reading comprehension. The professors collected 267 books originally written for Japanese children and required their students to read at least 40 of them as part of the grade in the course. The books were categorized into reading levels (color-coded for easy selection) according to length and complexity. Complete parts a through c. 3. Convert the relative frequency bar graph into a Pareto diagram. Interpret the graph. Choose the correct graph below. 4. Consider the stem-and-leaf display to the right. 5. MINITAB was used to generate the histogram to the right. 6. Calculate the mean, median, and mode of the following data.
12
18
19
11
13
18
20
15
18
14
13
1. For one study, reasearchers sampled over 100,000 first-time candidates for the certified public account (CPA) exam and reached the total semester hours of college credit for each candidate. The mean and median for the data set were 146.73 and 153 hours, respectively. Interpret these values. Make a statement about the type of skewness, if any, that exists in the distribution of total semester hours. 2. Calculate the range, variance and standard deviation for the following sample. 3, 4, 2, 2, 6, 1, 6
1. Consider the data below on the number of carats for 8 diamonds. Complete parts a through d. 0.39
0.78
0.71
0.65
0.45
1.17
0.78
0.97
1. Compute the z-score corresponding to each of the values of x below. 2. A sample data set has a mean of 67 and a standard deviation of 15. Determine whether each of the following sample measurements are outliers.