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What general conclusions can you draw

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Table 2.9 gives data on mean Scholastic Aptitude Test (SAT) scores for college-bound seniors for 1967-1990.

a. Use the horizontal axis for years and the vertical axis for SAT scores to plot the verbal and math scores for males and females separately.

b. What general conclusions can you draw?

c. Knowing the verbal scores of males and females, how would you go about predicting their math scores?

d. Plot the female verbal SAT score against the male verbal SAT score. Sketch a regression line through the scatterpoints. What do you observe?

TABLE 2.9 MEAN SCHOLASTIC APTITUDE TEST SCORES FOR COLLEGE-BOUND SENIORS, 1967-1990*

 

Verbal

 

 

Math

 

Year

Males

Females

Total

Males

Females

Total

1967

463

468

466

514

467

492

1968

464

466

466

512

470

492

1969

459

466

463

513

470

493

1970

459

461

460

509

465

488

1971

454

457

455

507

466

488

1972

454

452

453

505

461

484

1973

446

443

445

502

460

481

1974

447

442

444

501

459

480

1975

437

431

434

495

449

472

1976

433

430

431

497

446

472

1977

431

427

429

497

445

470

1978

433

425

429

494

444

468

1979

431

423

427

493

443

467

1980

428

420

424

491

443

466

1981

430

418

424

492

443

466

1982

431

421

426

493

443

467

1983

430

420

425

493

445

468

1984

433

420

426

495

449

471

1985

437

425

431

499

452

475

1986

437

426

431

501

451

475

1987

435

425

430

500

453

476

1988

435

422

428

498

455

476

1989

434

421

427

500

454

476

1990

429

419

424

499

455

476

*Data for 1967-1971 are estimates.

Reference no: EM13882223

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