Urgent, can you help me do the following statistics?

6.Bar charts use bars of the same width, height, or length, to indicate data changes. His bars are horizontal or longitudinal, and their length or height indicates the frequency of each category, which is also called a histogram when vertically positioned.

What is confusing is the histogram, which is the number of frequencies expressed in terms of area.

7.The period series reflects the total amount of activity of the phenomenon in a short period of time, the observed values can be added, the size of the indicator value is directly related to the length of time, and the indicator is obtained by continuous registration. The observation value of the time point series reflects the total amount of the phenomenon at a certain point in time, which is obtained statistically at a certain point in time and cannot be added, and the size of the index value is not directly related to the length of the time point interval, and is obtained by means of intermittent registration.

8.The aggregate index is a statistical indicator that reflects the total scale, total level and total results of social and economic phenomena at a certain time, place and conditions. It reflects the overall quantitative characteristics of the subjects studied.

Aggregate indicators are expressed in absolute form and have a unit of measurement. The value of the total indicator increases or decreases with the size of the study area.

The relative index is a comprehensive index that reflects the quantitative characteristics and quantitative relationship of socio-economic phenomena by comparing the ratio of two related indicators. The relative indicators include structural relative, proportional relative, comparative relative, planned completion relative, intensity relative, and dynamic relative.

The average index is an important characteristic value that reflects the general level of the whole and an important characteristic value that describes the concentrated trend of the quantitative distribution, and can be used for vertical and horizontal comparisons like the relative index, and the change of the average index is affected by the change in the level of each variable value and the change of the structure of each unit.

9.The composite index is simply synthesized and then compared, that is, the indexed indicators of individual phenomena are added up first, and then the total index is obtained through comprehensive comparison, which is divided into Rallais index and Paelis index, which are the weighted index of the base period and the weighted index of the calculation period, respectively.

The last one is to solve it yourself.

The number of epochs is the addition of different periods of time to meaning, and the number of time points is the addition of different moments of meaningless.

First, the effectiveness of the use of various methods for comparison.

Rapid traction effective rate = effective number Total x 100% = 444 474x100% =

Physical ** effective rate = 323 414x100% = sacral hiatus injection effective rate = 222 296x100% = 75% It can be seen that the rapid traction method has the highest effective rate, and this ** method should be preferred.

Second, the efficiency ratio of each method is used to compare.

Rapid traction effective rate = invalid number Effective number = 30 444 = physical ** effective rate = 91 323 =

Sacrohiatus injection effective rate = 74 222 =

It can be seen that the rapid traction method has the smallest effective rate, and this method should be preferred.

Third, the use of various methods to weight the effectiveness of comparison.

Weight of fast traction method = rapid traction method Total number of three ** methods x 100% = 474 1184x100% =

Physical ** weight = 414 1184x100% = sacral hiatus injection weight = 296 1194x100% = 25% According to the above weights, the weighted effective rate is calculated as follows.

Rapid traction method effective rate = effective number Total x weight value = physical ** effective rate =

Sacral hiatus injection effective rate = 75%x25% =

It can be seen that the rapid traction method is the largest and the most effective rate of patients choosing the rapid traction method, and this method should be given priority.

σρ²=n(1-n)/n=

As the sample size increases, the standard deviation of the sample proportion becomes smaller and closer to the standard deviation of the population.

Solution: (1) Group spacing.

2) Sales 10,000 yuan frequency times 0 less than or equal to x<6 76 less than or equal to x<12 1212 less than or equal to x<18 2118 less than or equal to x< 24 724 less than or equal to x<30 3 frequency times.

0 6 12 18 24 30 Sales 10,000 yuan.