Which of the following best describes a frequency distribution A frequency distribution is a grouping of:（）
A: data into intervals (classes) so that the number of observations in each of the non - overlapping intervals (classes) can be seen and tallied.
B: selected data into intervals (classes) so that the number of observations in each of the non - overlapping intervals (classes) can be seen and tallied.
C: dependent intervals (classes) so that they can be seen and tallied.
A: data into intervals (classes) so that the number of observations in each of the non - overlapping intervals (classes) can be seen and tallied.
B: selected data into intervals (classes) so that the number of observations in each of the non - overlapping intervals (classes) can be seen and tallied.
C: dependent intervals (classes) so that they can be seen and tallied.
举一反三
- The larger the number of observations in a numerical data set, the larger the number of class intervals needed for a grouped frequency distribution.
- The number of class intervals in a frequency distribution is usually between ___________.
- True or False: The larger the number of observations in a numerical data set, the larger the number of class intervals needed for a grouped frequency distribution.
- When constructing a frequency distribution, classes should be selected so that they are of equal width.
- True or False: When constructing a frequency distribution, classes should be selected so that they are of equal width.