Upcoming SlideShare
×

# Basic statistics revision

1,413 views
1,269 views

Published on

Published in: Education, Technology
1 Like
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

Views
Total views
1,413
On SlideShare
0
From Embeds
0
Number of Embeds
17
Actions
Shares
0
0
0
Likes
1
Embeds 0
No embeds

No notes for slide

### Basic statistics revision

1. 1. 1
2. 2. Bar charts 2
3. 3. Pictograms 3
4. 4. 4
5. 5. Pie charts 5
6. 6. Food pyramid pie chart 6
7. 7. The mean The mean is also known as the common average.Find the mean of this set of data: 7,  5,  2,  6,  12,  10,   4,  8,  9 7
8. 8. The modeThe mode is the data value that occurs most frequently.The following are the number of matches found in 14 boxes randomly chosen.The mode number of matches is......... 8
9. 9. The medianThe median value of a set of data is the value in the middle once the data has been ordered. 7,  5,  2,  6,  12,  10,   4,  8,  9,  3 9
10. 10. 10
11. 11. The table shows the marks otained by a group of students. mark 1 2 3 4 5 6frequency 5 9 16 18 20 7• Find the total number of students in this sample n=75• Find the mean mark mean =3.8• Find the median mark. median =4• What is the mode of this distribution? mode=5 11
12. 12. The rangeThe range is a measure of spread and it is  largest data value­ smallest data value range:7,  5,  2,  6,  12,  10,   4,  8,  9 range: mark 1 2 3 4 5 6 range:frequency 5 9 16 18 20 7 12
13. 13. The heights of dogs have been measured Heights ( mm) mean = 394 mm 600 470 median = 430 mm 170 300 430 range = 430 13