Partial Correlation Data

 

1. Storks and babies?

Country

Number of pairs of storks

Human Birthrate (1000 per year)

Country Area (km^2)

Albania

100

83

28750

Austria

300

87

83860

Belgium

1

118

30520

Bulgaria

5000

117

111000

Denmark

9

59

43100

France

140

774

544000

Germany

3300

901

357000

Greece

2500

106

132000

Holland

4

188

41900

Hungary

5000

124

93000

Italy

5

551

301280

Poland

30000

610

312680

Portugal

1500

120

92390

Romania

5000

367

237500

Spain

8000

439

504750

Switzerland

150

82

41290

Turkey

25000

1576

779450

Taken from: "Storks Deliver Babies (p = 0.008)." By: Matthews, Robert. Teaching Statistics, Summer2000, Vol. 22 Issue 2, p36, 3p.

 

2. Religion leads to murders (1992 data)?

City

Number of Churches and Synagogues

Number of Murders

Population

New York

3505

1984

7322564

Los Angeles

2023

1056

3485557

Chicago

2863

921

2783726

Houston

2011

447

1629902

Philadelphia

1709

420

1585577

San Diego

582

141

111623

Detroit

1475

586

1027974

Dallas

1313

373

1007618

Phoenix

663

134

983403

San Antonio

937

211

935393

San Jose

355

42

782224

Indianapolis

1010

132

741952

Baltimore

1098

326

736014

San Francisco

615

113

723959

Jacksonville

875

125

672971

 

3. Is Poverty Related to SAT Mathematics Performance?

States

SAT-Math Scores

Percentage of State Residents Under the  Poverty Level

Percentage of Students who take SAT

NM

551

24

12

DC

476

22.5

83

Louisiana

558

22

8

Mississippi

549

21.3

4

WV

513

17.9

18

Texas

501

17.7

51

Arizona

528

17.5

32

California

516

17.2

47

Alabama

558

16.8

8

Oklahoma

564

16.8

8

Kentucky

550

16.7

13

NY

503

16.7

76

Arkansas

555

15.8

6

SC

473

15.6

61

Tennessee

557

15.3

13

Florida

501

15.1

52

Montana

546

14.6

24

Georgia

482

13.6

64

SD

581

13.6

5

NC

492

13

62

Idaho

544

12.8

16

Ohio

540

12.8

24

Michigan

569

12.5

11

Illinois

581

12.3

13

Kansas

585

12.3

9

Pennsylvania

495

12.1

71

Washington

526

12

53

Oregon

528

11.6

53

Missouri

573

11.5

8

ND

599

11.1

5

Virginia

499

11.1

66

Wyoming

546

11.1

10

Iowa

601

10.8

5

Connecticut

509

10.7

80

Maine

501

10.6

68

RI

495

10.6

72

Hawaii

513

10.4

55

Maryland

508

10.4

65

Indiana

500

10.3

59

Massachusetts

508

10.3

77

Minnesota

598

10.2

9

Vermont

504

10.2

71

Nevada

513

10.1

33

Colorado

542

9.5

31

Nebraska

571

9.5

8

Delaware

493

9.1

70

Wisconsin

594

8.8

7

NJ

508

8.7

79

Alaska

520

8.5

52

Utah

570

8

4

NH

520

6.5

74

 

4. What relationship should exist between educational level and violent crime rate? What does DC do to this relationship?

State

violent crime rate

Percentage with college degrees

Percentage who live in metropolitan areas

Alabama

486

20.4

70.2

Alaska

567

28.1

41.6

Arizona

532

24.6

87.9

Arkansas

445

18.4

49

California

622

27.5

96.7

Colorado

334

34.6

84

Connecticut

325

31.6

95.6

Delaware

684

24

81.4

D.C.

1508

38.3

100

Florida

812

22.8

93

Georgia

505

23.1

69.1

Hawaii

244

26.3

72.9

Idaho

253

20

38.6

Illinois

657

27.1

84.5

Indiana

349

17.1

71.8

Iowa

266

25.5

44.9

Kansas

389

27.3

56.8

Kentucky

295

20.5

48.4

Lousiana

681

22.5

75.2

Maine

110

24.1

36.3

Maryland

787

32.3

92.7

Massachusetts

476

32.7

92.1

Michigan

555

23

82.5

Minnesota

281

31.2

70.3

Mississippi

361

18.7

36.2

Missouri

490

26.2

68

Montana

241

23.8

33.4

Nebraska

328

24.6

52.2

Nevada

524

19.3

86.6

New Hampshire

175

30.1

60.3

New Jersey

384

30.1

100

New Mexico

758

23.6

57

New York

554

28.7

91.9

North Carolina

498

23.2

67.2

North Dakota

81

22.6

43.4

Ohio

334

24.6

80.9

Oklahoma

496

22.5

60.6

Oregon

351

27.2

72.8

Pennsylvania

420

24.3

84.5

Rhode Island

298

26.4

93.8

South Carolina

805

19

70.2

South Dakota

167

25.7

34.5

Tennessee

707

22

67.9

Texas

545

23.9

84.6

Utah

256

26.4

76.4

Vermont

114

28.8

27.9

Virginia

282

31.9

78.2

Washington

370

28.6

83

West Virginia

317

15.3

41.9

Wisconsin

237

23.8

67.8

Wyoming

267

20.6

29.6

 

5. Do gun regulations in a state increase homicides?
(Compare box plots of homicides by gun regulation vs. log homicides by gun regulation)

States

Gun Regulation (1=yes, 0=no)

Number of Homicides

Number of Homicides (log 10 scale)

Population (in 1,000s)

AL

1

410

2.61

4089

AR

1

240

2.38

2372

CA

1

3710

3.57

30380

CT

1

170

2.23

3291

DC

1

489

2.69

598

FL

1

1300

3.11

13277

HI

1

44

1.64

1135

IA

1

62

1.79

2795

IL

1

1270

3.10

11543

MA

1

200

2.30

5996

MD

1

540

2.73

4860

MI

1

1020

3.01

9368

MN

1

100

2.00

4432

MO

1

550

2.74

5158

NC

1

730

2.86

6737

ND

1

11

1.04

635

NJ

1

350

2.54

7760

NY

1

2550

3.41

18058

OH

1

760

2.88

10939

PA

1

740

2.87

11961

RI

1

38

1.58

1004

SC

1

350

2.54

3560

TN

1

470

2.67

4953

TX

1

2660

3.42

17349

UT

1

43

1.63

1770

WA

1

220

2.34

5018

AK

0

56

1.75

570

AZ

0

290

2.46

3750

CO

0

155

2.19

3377

DE

0

32

1.51

680

GA

0

720

2.86

6623

ID

0

21

1.32

1039

IN

0

380

2.58

5610

KS

0

150

2.18

2495

KY

0

260

2.41

3713

LA

0

760

2.88

4252

ME

0

23

1.36

1235

MS

0

370

2.57

2592

MT

0

29

1.46

808

NE

0

43

1.63

1593

NH

0

32

1.51

1105

NM

0

160

2.20

1548

NV

0

135

2.13

1284

OK

0

220

2.34

3175

OR

0

120

2.08

2922

SD

0

9

.95

703

VA

0

550

2.74

6286

VT

0

24

1.38

567

WI

0

240

2.38

4955

WV

0

135

2.13

1801

WY

0

20

1.30

460

Gun regulation = mandatory licensing and registration of handguns.

 

6. Does teacher salary or per pupil expenditure relate to student performance on SAT mathematics?

State

Expenditure Per Pupil (in thousands of dollars)

Average pupil/teacher ratio

Average Annual Teacher Salary

Percentage of eligible students taking SAT

Average SAT Verbal

Average SAT math

Average Total SAT

Alabama

4.405

17.2

31.144

8

491

538

1029

Alaska

8.963

17.6

47.951

47

445

489

934

Arizona

4.778

19.3

32.175

27

448

496

944

Arkansas

4.459

17.1

28.934

6

482

523

1005

California

4.992

24

41.078

45

417

485

902

Colorado

5.443

18.4

34.571

29

462

518

980

Connecticut

8.817

14.4

50.045

81

431

477

908

Delaware

7.03

16.6

39.076

68

429

468

897

Florida

5.718

19.1

32.588

48

420

469

889

Georgia

5.193

16.3

32.291

65

406

448

854

Hawaii

6.078

17.9

38.518

57

407

482

889

Idaho

4.21

19.1

29.783

15

468

511

979

Illinois

6.136

17.3

39.431

13

488

560

1048

Indiana

5.826

17.5

36.785

58

415

467

882

Iowa

5.483

15.8

31.511

5

516

583

1099

Kansas

5.817

15.1

34.652

9

503

557

1060

Kentucky

5.217

17

32.257

11

477

522

999

Louisiana

4.761

16.8

26.461

9

486

535

1021

Maine

6.428

13.8

31.972

68

427

469

896

Maryland

7.245

17

40.661

64

430

479

909

Massachusetts

7.287

14.8

40.795

80

430

477

907

Michigan

6.994

20.1

41.895

11

484

549

1033

Minnesota

6

17.5

35.948

9

506

579

1085

Mississippi

4.08

17.5

26.818

4

496

540

1036

Missouri

5.383

15.5

31.189

9

495

550

1045

Montana

5.692

16.3

28.785

21

473

536

1009

Nebraska

5.935

14.5

30.922

9

494

556

1050

Nevada

5.16

18.7

34.836

30

434

483

917

New Hampshire

5.859

15.6

34.72

70

444

491

935

New Jersey

9.774

13.8

46.087

70

420

478

898

New Mexico

4.586

17.2

28.493

11

485

530

1015

New York

9.623

15.2

47.612

74

419

473

892

North Carolina

5.077

16.2

30.793

60

411

454

865

North Dakota

4.775

15.3

26.327

5

515

592

1107

Ohio

6.162

16.6

36.802

23

460

515

975

Oklahoma

4.845

15.5

28.172

9

491

536

1027

Oregon

6.436

19.9

38.555

51

448

499

947

Pennsylvania

7.109

17.1

44.51

70

419

461

880

Rhode Island

7.469

14.7

40.729

70

425

463

888

South Carolina

4.797

16.4

30.279

58

401

443

844

South Dakota

4.775

14.4

25.994

5

505

563

1068

Tennessee

4.388

18.6

32.477

12

497

543

1040

Texas

5.222

15.7

31.223

47

419

474

893

Utah

3.656

24.3

29.082

4

513

563

1076

Vermont

6.75

13.8

35.406

68

429

472

901

Virginia

5.327

14.6

33.987

65

428

468

896

Washington

5.906

20.2

36.151

48

443

494

937

West Virginia

6.107

14.8

31.944

17

448

484

932

Wisconsin

6.93

15.9

37.746

9

501

572

1073

Wyoming

6.16

14.9

31.285

10

476

525

1001

Source: http://www.amstat.org/publications/jse/datasets/sat.dat