Thumb Dexterity vs. Gaming

By:Jimmy Lavery

Brandon Dalessandro

Huh? Please Explain.

People have said that video games can actually improve your hand-eye coordination

Wanted to see whether this hypothesis was true

Our Test

Had our subjects hit the ENTER button on a calculator as many times as possible with their thumb in the minute

Recorded the number of hits along with their gender, what hand they write with, and how often they play video games

The Data

1

2

3

4

5

6

7

8

PTS

220 240 260 280 300 320 340 360 380 400 420

Collection 1 Histogram

•The shape of the data is approximately normal•The mean and median are approximately the same, so either could be used as the center•The standard deviation would be used for the spread

Normal Probability Plot

-2

-1

0

1

2

PTS

220 240 260 280 300 320 340 360 380 400

Normal Quantile = 0.0309PTS - 9.9

Collection 1 Normal Quantile Plot When the data is plotted on the normal probability plot, you can see that the data is very straight and linear. This means that the data fits the normal model very well.

GenderF

M

PTS

220 240 260 280 300 320 340 360 380 400

Collection 1 Box Plot Collection 1

RowSummary

GENDER

M

GENDER

F

PTS

15

239

282

299

317

381

303.333

33.3138

17

295

319

328

353

387

335.471

23.3456

32

239

297.5

318

348

387

320.406

32.3727

S1 = countS2 = minS3 = Q1S4 = medianS5 = Q3S6 = maxS7 = meanS8 = s

• If we exclude the outlier for females, both the male and female data plots are approximately normal• The median and mean for males is higher than the median and mean of females• The males have a much smaller spread than the females

Video Game FrequencyA

NS

PTS

220 240 260 280 300 320 340 360 380 400

Collection 1 Box Plot Collection 1

RowSummary

VIDEO_GAMESVIDEO_GAMES

N S

VIDEO_GAMES

A

PTS

327.889

9

239

310

341

356

387

43.7277

312.538

13

279

294

311

321

381

28.4682

323.9

10

276

311

327.5

348

358

25.8949

320.406

32

239

297.5

318

348

387

32.3727

S1 = meanS2 = countS3 = minS4 = Q1S5 = medianS6 = Q3S7 = maxS8 = s

•With the exclusion of the outliers, the three boxplots are approximately normal in shape•The median of Always is the higher than the median of Sometimes, which is higher than the median of Never•The spread of Sometimes is smaller than the spread for Never, which is smaller than the spread for Always

Overall Data

2

4

6

8

10

12

14

VIDEO_GAMES

A N S

count

Collection 1 Bar Chart

2

4

6

8

10

12

14

16

18

GENDER

F M

count

Collection 1 Bar Chart

Marginal Distribution for both Gender and Video Game Frequency

Distribution by Gender

Distribution by Video Game Frequency

Collection 1

RowSummary

Column Summary

VIDEO_GAMESVIDEO_GAMES

N S

VIDEO_GAMES

A

F

MGENDER

2 10 3

7 3 7

9 13 10

15

17

32

S1 = count

Conditional Distribution• Of all females that took part in our sample, 13.3% said they always play video games, 66.6% said they never play video games, and 20% said they sometimes play video games.• Of all males that took part in our sample, 41.1% always play video games, 17.6% never play video games, and 41.1% sometimes play video games

Collection 1

RowSummary

Column Summary

VIDEO_GAMESVIDEO_GAMES

N S

VIDEO_GAMES

A

F

M

GENDER

2

0.133333

10

0.666667

3

0.2

7

0.411765

3

0.176471

7

0.411765

9

0.28125

13

0.40625

10

0.3125

15

1

17

1

32

1

S1 = countS2 = row Proportion

Collection 1

RowSummary

Column Summary

VIDEO_GAMESVIDEO_GAMES

N S

VIDEO_GAMES

A

F

M

GENDER

2

0.222222

10

0.769231

3

0.3

7

0.777778

3

0.230769

7

0.7

9

1

13

1

10

1

15

0.46875

17

0.53125

32

1

S1 = countS2 = columnProportion

• For all subjects who answered that they always play video games, 22% are females and 78% are males.• For all subjects who answered that they never play video games, 77% were females and 23% were males.• For all subjects who answered that they sometimes play video games, 30% were females and 70% were males.

Marginal Distribution

Always – 28.1%Never – 40.6%Sometimes – 31.3%

Females – 46.9%Males – 53.1%

Independence•The Chi-Squared value is 8.053 with 2 degrees of freedom•The P-Value is 0.018, which is less than the alpha of .05•This means that the two variables are dependent on one another

Conclusion

We have concluded that video games do have an effect on thumb dexterity

So if your parents are ever yelling at you for playing too much Xbox, just tell them your improving your finger dexterity