220 people are asked how many siblings they have? # of Siblings Frequency Relative Frequency Cumulative Frequency 0   0.2455 54 1 37   91 2 44 0.2   3 45 0.2045 180 4 40 0.1818 220 a. Complete the table (Use 4 decimal places when applicable) b.  What percent of the people have exactly one sibling? %

The data set below represents the ages of 36 executives. Find the percentile that corresponds to an age of 53 years old. 28     28     29     30   36    40    40   42   42   43 45     46     46     48   48    50    50   50   53   53 53     55      55    57   57    59    62    62  62   63 63     65      65    65   66    66 Percentile of 53=___________. ( round to the nearest integer as needed)

Calculate the percentile for a student whose exam score is 81. Round your answer to the nearest whole number. x 50 57 58 60 60 64 66 67 67 70 72 75 75 75 79 80 83 83 83 86 87 87 88 89 95 96 96 99

mg The total blood cholesterol level was measured for each of 20 adults. Here are the 20 measurements (in ). dL 129, 138, 154, 158, 170, 172, 176, 176, 184, 187, 189, 190, 199, 199, 201, 206, 213, 220, 227, 249 Send data to Excel Send data to calculator Frequency 8 6+ 4- 24 0 125 2 150 Answer the questions below. 4 175 200 Cholesterol level (in mg/dl) 8 (a) For these data, which measures of central tendency take more than one value? Choose all that apply. Check (b) Suppose that the measurement 249 (the largest measurement in the data set) were replaced by 348. Which measures of central tendency would be affected by the change? Choose all that apply. (c) Suppose that, starting with the original data set, the largest measurement were removed. Which measures of central tendency would be changed from those of the original data set? Choose all that apply. A 225 2 250 Mean Median Mode ONone of these measures Mean Median Mode ONone of these measures Mean Median Mode None of these measures X…

240 people are asked how many siblings they have? # of Siblings Frequency Relative Frequency Cumulative Frequency 0 52 0.2167   1   0.2083 102 2 38 0.1583 140 3 51 0.2125 191 4 49   240 a. Complete the table (Use 4 decimal places when applicable) b.  What percent of the people have exactly two siblings? %

25

A frequency table of grades has five classes (A, B, C, D, F) with frequencies of 5, 13, 16, 4, and 3 o respectively. Using percentages, what are the relative frequencies of the five classes? Complete the table. Grade Frequency Relative frequency. A % 13 % 16 4. F. (Round to two decimal places as needed.) BCD

230 people are asked how many siblings they have? # of Siblings Frequency Relative Frequency Cumulative Frequency 0 41 0.1783   1     82 2 49 0.213 131 3 50 0.2174 181 4 49 0.213 230 a. Complete the table (Use 4 decimal places when applicable) b.  What percent of the people have exactly one sibling? _______%

A frequency table of grades has five classes (A, B, C, D, F) with frequencies of 2, 15, 18, 4, and 2 respectively. Using percentages, what are the relative frequencies of the five classes? Complete the table. Grade Frequency Relative frequency A 2 % B 15 % 18 D 4 % F 2 % (Round to two decimal places as needed.)

In a student survey, forty-one part-time students were asked how many courses they were taking this term. The (incomplete) results are shown below: Please round your answer to 4 decimal places for the Relative Frequency if possible. # of Courses Frequency Relative Frequency Cumulative Frequency 1 15 0.3659 15 2 12 0.2927   ? 3   ?    ? 41  What percent of students take exactly one courses          ? %