Example 3 Calculate the mean of the given frequency distribution. Class intervals: 10-20 20-30 30-40 40-50 Frequency: 15 25 30 5
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Q: Example In a frequency distribution the coefficient of skewness based upon quartiles is 0.6. If the…
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- The accompanying data represent the approximate population, in millions, of the 20 most populous cities in the world. Use these data to construct a frequency distribution with a first class of 7.0 -7.9. Fill in the missing classes and the frequency for each class below. Population (millions of people) 7.0 -7.9 □-□ 10.0 - 10.9 11.0-11.9 Number of Cities 13.5 11.5 10.1 8.3 7.7 13.4 11.3 10.1 8.2 7.6 13.3 10.8 9.5 8.2 7.6 13.3 10.5 9.2 7.7 7.2 20The frequency distribution below summarizes employee years of service at a certain company what is the class width? 1-7 8-14Use the frequency distribution shown below to construct an expanded frequency distribution. High Temperatures (°F) Class 15-25 26-36 37-47 48-58 59-69 70-80 81-91 e Frequency, f 17 42 66 67 84 66 23 (.... Complete the table below. High Temperatures (°F) (Round to the nearest hundredth Relative frequency needed.) Cumulative frequency Class Frequency, f Midpoint 15-25 17
- The following frequency distribution represents the scores on a math test. Find the class midpoint of scores for the interval 40-59. Number of Students 2 4 Scores 0-19 20-39 40-59 60-79 80-99 OA 49.0 OB. 49.5 OC. 48.5 OD. 50.5 655 CThe frequency distribution shown is constructed incorrectly. Class Frequency 132 - 136 5 137 - 141 9 142 - 146 3 147 - 151 8 152 - 156 14 162 - 166 16 Select all applicable mistakes in the frequency distribution. class limits overlap a class is omitted class width is not uniformi need the answer quickly
- Example 2-2. Calculate the mean for the following frequency distribution : Class interval : 0-8 8–16 16-24 24–32 32-40 40–48 Frequency : 8 7 16 24 15 7* h6. In the frequency distribution of 100 families given below, the number of families corresponding to expenditure groups 20-40 and 60-80 are missing from the table. Find these missing frequencies Expenditure (in): 0-20 20-40 40-60 60-80 80-100 No. of families: 14 27 ? 15 However the median is known to be 50.The frequency distribution is incorrectly constructed. State the reason why. Class Frequency, f 27-32 1 33-38 39-44 6. 45-49 4 50-55 2 A class has been omitted Class limits overlap Class width is not uniform
- 10 4 The data represent the time, in minutes, spent reading a political blog in a day. Construct a frequency distribution using 5 classes. In the table, include the midpoints, relative frequencies, and cumulative frequencies. Which class has the greatest frequency and which has the least frequency? 3 4. 19 17 12 14 16 16 14 Complete the table, starting with the lowest class limit. (Simplify your answers.) Relative Cumulative Frequency Midpoint Frequency Frequency Class 2640 2266describe the steps you would take to construct a frequency distributionThe data represent the time, in minutes, spent reading a political blog in a day. Construct a frequency distribution using 5 classes. In the table, include the midpoints, relative frequencies, and cumulative frequencies. Which class has the greatest frequency and which has the least frequency? Complete the table, starting with the lowest class limit. (Simplify your answers.) Class Frequency Midpoint 11 19 13 12 Relative Frequency 1966 011 13 15 10 8 10 10 16 Cumulative Frequency 6729 U
