Thursday, 4 May 2017

Statistics 2K17

                          Choice Squares 2K17

Activity 1:

The students in Room 8 at Te Paki School wanted to find out which fruits were preferred by class members. Mr Winiata drew some of their suggestions and a ? on the board:

Why do you think Mr Winiata drew a question mark?The reason why Mr Winiata drew a question mark is because their were some students who didn’t like the fruits that other students chose. So Mr Winiata put in a question mark.

Each student chose one of the fruits or the ? and drew it on a blank choice square. Jo collected all these choice squares in a box. The students found different ways of arranging the choice squares to displace the results.

Kim made a bar graph like this:

Activity 2:

The students in Room 8 checked their lunchboxes to see what fruit was in them. Jo made this graph of the data.

There are only 22 students in Room 8, so why does the graph have 29 squares around the outside?The reason why their is 29 squares outside of the graph is because it is to show how many students have that fruit and, how many people didn’t bring fruit.

B. Does the graph show that the students in Room 8 get their favourite fruit for lunch?The graph only shows how many students have brought their favourite fruit to school. Most people didn’t want to bring a fruit to school.

C. What would you say to Room 8 parents about this data? What I might say to the Room 8 parents and what I think about this data is that, it gave me lot’s of information about how many kids brought fruits to school and how many students didn’t bring fruit at all.

AWS Statistic L2 Task 2:
Understanding and Drawing Tables:

When data or information has been collected it can be displayed in a table.

Being able to understand the data or information in a table is an important skill.

Sports Pupils Play

This table shows the winter sports that pupils in Room 10 play.

1. How many pupils play volleyball?
Only 12 pupils played Volleyball.

2. 17 pupils played which sport?
The 17 pupils played soccer.

3. How many pupils played hockey?
Only about 19 people played Hockey.

4. How many more pupils played rugby then played netball?
More of the pupils played rugby more than netball.

5. Which sport is played by the most number of pupils?
Rugby has the most pupils who have played it.

This table shows how pupils St James school travel to school.

How many Pupils travel to School?

6. How many pupils walk to school?
Only about 70 pupils walk to school from home.

7. How many pupils come by car?
40 pupils come to school by car.

8. How many pupils bike to school?
23 pupils bike to school from home.

9. How many pupils come by train and bus?
7 pupils come by train and 15 pupils come by bus.

10. How many more pupils come by car than by bus?
15 + 25 = 40. So that means that 25 people came by car than bus.

11. How would you work out how many pupils go to this school?
155 students go to that one particularly school.

12. In Linda’s class there are 15 girls and 14 boys. Draw a table to show this information.

Remember to write a heading for each column of your table.

13. In Tracey’s class there were 2 pupils away on Monday, 4 away on Tuesday, none away on Wednesday, 3 away on Thursday and 2 pupils away on Friday.

Draw a table to show this information.

Remember to write a heading for each column of your table.


Collecting & Organising Data


Look at this list of vowels. [a,i,e,a,o,u,i,a,u,u] How many are there of each vowel?

Because there were only 10 vowels it was easy to work out, but if there were 50 or 100 vowels, how could you work out the number of times each vowel occurred?

Using a tally chart can help.

Make a mark in the tally column next to the vowel as you go through the list. Remember to mark off in 5’s.

Frequency means ‘how often something occurs’. Add up the frequency column to find out how many vowels there were.

Answer, 30 vowels.

Tally Chart Example:

                                                 Creating Tally Chart

Task 3:

Pupils in a class were asked how many pets they each had.

Create a tally chart to display these results.

2. How many pupils had 2 pets?
16 people had 2 pets at home.

3. How many pupils are in this class?
There are 62 pupils in this class.

Pupils in Room 5 were asked how they travelled to school.

4. Create a tally chart to display these results.

5. How many pupils walked to school?
9 pupils walked to school from home.

6. How many pupils biked to school?
7 pupils biked to school.

7. How many pupils in this class?
There are 24 pupils in this class.

Mr. McGregor has a problem with caterpillars on his cabbages. One day he counted the number of caterpillars on each cabbage plant. These were his results.

8. Create a tally chart to display these results.

9. What was the most common number of caterpillars on a cabbage?
The most common numbers of caterpillars that was found on Mr. McGregor cabbage is 10.

10. How many cabbage plants were there?
There are 369 cabbage plants that Mr. McGregor had.

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