Example 1: Tally marksare often used to make a frequency distribution table. For example, let’s say you survey a number of households and find out how many pets they own. The results are 3, 0, 1, 4, 4, 1, 2, 0,
从1515开始并建立大小为66的88个组。 ClassClassBoundariesFrequency15−2021−2627−3233−3839−4445−5051−5657−62ClassClassBoundariesFrequency15-2021-2627-3233-3839-4445-5051-5657-62 利用组下限减去0.50.5,组上限加上0.50.5,可确定组边界。
数据组的相对频率是该组内数据元素的百分比。相对频率可利用公式fi=fnfi=fn进行计算,其中ff是绝对频率,nn是所有频率之和。 fi=fnfi=fn nn为所有频率之和。在本例中,即n=3+6+4+2=15n=3+6+4+2=15。 n=15n=15 可以使用公式fi=fnfi=fn计算相对频率。
Cumulative frequency is the running total of frequencies in a frequency distribution. For example, the frequency distribution table below shows the individual frequencies for each month and the cumulative frequencies for each month. The frequency table shows the amount of snow that fell in Yellowstone...
Frequency distribution table is a method of organizing the collected data to make it more meaningful. Learn about frequency, frequency tables, tally marks .
Problem 2.Create an Ungrouped Frequency Distribution table with the data from the survey concerning the age of the people, which attend the gym. The results of a survey are presented below. Solution The same steps as for the previous problem were accomplished. Results are performed in the Ungro...
Cumulative frequency distributions can also be summarized in a table. This table shows the frequency of hair colors for a population sample. Example question:What is the value for?in the above cumulative distribution table? Solution: 41. To get this number, add up all of the frequencie...
For example, the cumulative frequency up to and including the class interval 8341–10862 in the previous example is 20 + 6 + 3 = 29, signifying that 29 cars have prices less than 10862 US dollars. A table presenting such cumulative frequencies is called a cumulative frequency distribution, a...
Study the following frequency distribution table and answer the questions given below. Frequency Distribution of Daily Income of 550 Workers of a Factory
Using tally marks, make a frequency distribution table with class intervals 800 – 810, 810 – 820 and so on Answer the following questions. How many workers earn less than Rs. 850? View Solution Draw a histogram for the frequency distribution table given in Example 13 and statement of ...