A survey by:

Laura ArmasOlga FarsiyanovaLaura MenéndezCarola MonsalveSandra Prieto

Did/Do you have an ortodoncy? (Pie Chart)

How old were you when you put it on? (Table)

How old were you when you put it on? (Graph)

How long would/did it take for you? (Table)

How long would/did it take for you? (Pie Chart)

How much did it cost? (Table)

How much did it cost? (Histogram)

Mean:

• It’s the average value of the distribution.

• It’s calculated by this formula.

Median:

• It’s the value that is at the heart of all data when they are ordered from

lowest to highest.

• It’s represented by Me.

Mode:

• It’s the most repeated value in a distribution.

• It’s represented by Mo.

40%

60%

Data Absolute frecuency Relative frecuency

9 Years 3 3/30 = 0.1

10 years 1 1/30 = 0.3

11 years 5 5/30 = 0.16

12 years 7 7/30 = 0.23

13 years 8 8/30 = 0.26

14 years 6 6/30 = 0.2

Ns/Nc 0 0/30 = 0

Total 30

Median = 12 years. Mode = 13 yearsMean =

DATA A.FRECUENCY R.FRECUENCY PERCENTAGE ANGLE

1 Year 3 3/30 = 0.1 10 % 0.1 x 360 = 36

2 years 13 13/30 = 0.44 44 % 0.44 x 360 = 158.4

3 years 12 12/30 = 0.4 40 % 0.4 x 360 = 144

4 years 1 1/30 = 0.03 3 % 0.03 x 360 = 10.8

5 years 1 1/30 = 0.03 3 % 0.03 x 360 = 10.8

6 years 0 0/30 = 0 0 % 0 x 360 = 0

Ns/Nc 0 0/30 = 0 0 % 0 x 360 = 0

Total 30

Median = 2 years Mode = 2 yearsMean =

Ventas

1 year

2 years

3 years

4 years

5 years

6 years

Ns/Nc

10 %

44 %

40 %

3 %3 %

INTERVALS CLASS MARK xi

A.FRECUENCYfi

R.FRECUENCYhi

PORCENTAGE

1500-2000€ 1750 2 2/30= 0,06 6 %

2000-2500€ 2250 1 1/30= 0,03 3 %

2500-3000€ 2750 12 12/30= 0,4 40 %

3000-3500€ 3250 5 5/30= 0,16 16 %

3500-4000€ 3750 3 3/30= 0,1 10 %

4000-4500€ 4250 0 0/30= 0 0 %

Ns/Nc 4750 7 7/30= 0,23 23 %

Total 30

Mean = Median = 2500-3000€ Mode = 2500-3000€

0

2

4

6

8

10

12

14

1500-2000 €

2000-2500 €

2500-3000 €

3000-3500 €

3500-4000 €

4000-4500 €

Ns/Nc

1500 2000 2500 3000 3500 4000 4500