1, commonly used statistics are () statistics, () statistics and () statistics.
2, if you want to show the changes of various quantities, choose () statistical chart is more appropriate; If you want to show the relationship between each part and the whole, it is more appropriate to choose () statistical chart.
3. If you want to make the following concrete examples into a statistical chart, what statistical chart would you choose?
(1) Count the proportion of the total number of people in a class who participate in interest groups. ( )
(2) Statistics of monthly fluctuation of stock price in 2008. ( )
(3) Ward nurses should count the patient's temperature day and night. ( )
(4) Statistics of the number of people in each workshop of the factory. ( )
(5) Statistics of a student's mathematics test scores in each unit in the first semester. ( )
(6) Statistics of various nutrients in a food. ( )
4. The following two pictures are the weights of the students in Class Five (1). The above picture can be intuitively expressed as (), and the following picture can be clearly expressed as (). "Obesity 12.5%" refers to the percentage of obese people in (). (Shandong Yantai No.2 Experimental Primary School)
Second, carefully identify and accurately judge. (Tick "√" in brackets for the right and "×" in brackets for the wrong, with 3 points for each question *** 12).
1, statistical tables and charts are drawn on the basis of collected data. ( )
2. In the bar graph, if a 3 cm long straight bar represents 20 people, then a 2 cm long straight bar can represent 30 people. ( )
3. Compared with statistical tables, straight lines and broken lines are more vivid than data, and the quantitative relationship is more obvious. ( )
Third, carefully analyze and explain. (4 points for each small question, ***20 points)
1, the following figure is a statistical chart of the warehousing rate of various commodities in a supermarket. Some people think that food is the most. Do you agree? Please tell me the reason.
2. The picture above shows the statistics of sports activities that students in Class Six (1) like. Analysis and judgment:
(1) What sports do the students in Class Six (1) like best?
(2) What kind of sports activities do students in Class Six (1) like best?
3. The output of workshop A and workshop B of a factory from February to May is as follows:
(1) At first glance, which workshop do you think is growing rapidly?
(2) Draw the output of workshop B in the output statistical chart of workshop A, and then see which workshop's output grows faster.
Fourth, observe carefully and complete the following questions. (3 points for each small question, *** 12 points)
The following two statistical charts reflect the distribution of mathematics self-test scores and home study time of students A and B in the review stage. Please look at the picture and answer the following questions:
1, it can be seen from the statistical chart of dotted line that () has improved rapidly.
2. It can be seen from the histogram that the reflection time of () is less than ()%.
3. Whose learning style do you like and why?
4, whose learning style do you like, just find the average score of his last three self-tests.
5. Go into life and solve problems. (***34 points)
1. On the right is the fan map of "What's your favorite sport" in Wang Ming's statistics class. (8 points)
(1) How many people are there in this class?
(2) How many people like basketball and table tennis?
One day, the teacher took 5000 yuan to the store to buy electrical appliances and saw a combination of household appliances. TCL color TV is 2000 yuan, DVD player is 80% of color TV, and speaker is 20% more expensive than color TV. Please help the teacher budget: Do you have enough money with you to buy these three kinds of home appliances? (5 points)
3. Statistics of Xiao Ming's expenditure and savings in April (right): (10)
(1) The food expenses of Xiao Ming's family in April * * * cost 800 yuan. What is the total expenditure and savings of Xiao Ming's family?
(2) Fill in the following table according to the pie chart.
The game between Xiao Gang and Xiao Qiang is shown below. ( 1 1)
(1) () Reach the finish line first.
(2) Please use "fast" and "slow" to describe their game: Xiao Gang is behind ().
(3) Lead () at the beginning of the game and () after the game, and the longest distance between them is about () meters.
(4) What is the average speed of two people per minute? (Keep integer)