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Anonymous users2024-02-09The length of the variation interval of each group of variable values determines the representation of the group limit and group spacing.
1) The group spacing should include all variable values.
2) The lower limit is best to be the group spacing (10, which is the difference between the upper and lower limits.
Group Median Value: the midpoint value of the value range of each group of variables.
Group Median = (Upper + Lower Limit) 2
Assign a series. Preparation of the distribution series.
Variables are discrete variables.
Determine the form of the series of variables – mononomial or group-spacing.
2. Determine the group spacing and number of groups.
3,23,20, singular value series:
Refers to a series in which each group of values is represented by only one specific variable value.
Preparation conditions. Daily output (pieces) x
Number of workers (person) f
Total. 2. Group spacing series, 23It is required to compile a series of variables based on the above information, 21, 22, and their daily output (pieces) are:
20, 22, 23, 21, 24, the maximum value is the upper limit
Group spacing: refers to the number of variables in which the variable values of each group are represented by an interval.
Preparation conditions: Variables are continuous variables, general type:
The length of the variable value variation interval is not exactly equal.
Assign a series. Related Concepts:
Group limit: refers to the variable value at both ends of each group, 24, 23, 21, 22, 25, 26, 24, 25.
Equidistant series: The length of the interval between the variable values is equal.
heterogeneous series; Or: Discrete variables with a large number of units in the overall population, variables with different values, and a large number of values.
The group spacing series is further divided into equidistant series and heterodistant series, multiples of 100).
3) Representation of group spacing - discrete, 20, 21, 22, 22; The number of different values of variables is small (both).
Example] I know that there are 24 workers in a workshop, and the minimum value of each group is the lowlimit
According to the nature of the grouping mark, the distribution series is divided into quality allocation series and variable allocation series.
The variable series is further divided into a single-value series and a group-distance series.
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Anonymous users2024-02-08The distribution series differs in nature by grouping.
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Anonymous users2024-02-071.The composition of the distribution sequence is ().
a.Each group of earthly groups is divided into groups.
b.Number of units per group.
c.The weights of each group.
d.Frequency of each group.
e.Frequency of each group.
Correct answer back to the orange case Paimin: abcde
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Anonymous users2024-02-061. Determine the form of the variable series - mononomial or group spacing 2, determine the group spacing and number of groups.
3. Determine the representation of group limit and group spacing.
1) The group spacing should include all variable values.
2) The lower limit should preferably be a multiple of the group spacing (10,100).
3) Representation of group spacing – discrete, general, continuous.
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Anonymous users2024-02-05On the basis of statistical grouping, all units of the population are grouped and arranged in groups to form the distribution of each unit in the population among the groups, which is called the distribution series, also known as the distribution series or the distribution of times.
Conception. The distribution sequence includes two elements: first, the group of the population according to a certain sign; The second is the overall number of units occupied by each group.
The distribution series is of great significance in statistical research. Sequence is the main manifestation of statistical grouping results, and it is also an important method of statistical analysis. It can show the distribution characteristics and structure of the overall unit in each group, and on this basis, further study the composition, average level and regularity of the markers.
The allocation sequence consists of each group name and the number of times.
Statistical distribution is based on statistical grouping, and all units of the population are arranged in groups. Forms the distribution of units in the population among the groups. Its essence is to distribute all the units of the whole according to the group of a certain sign to form a series of numbers, so it is also called a distribution series or a distribution series.
The statistical distribution is composed of two constituent elements: the group of the population according to a certain marker, and the number of units occupied by each group-number of times. According to the different grouping flags, the allocation series is divided into quality allocation series and variable allocation series.
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