직장에서, 자신이 신입사원이건 경력자이건 상관없이 실생활 의사결정 문제에 대한 통계학적 분석 능력을 가지고 있다면 매우 경쟁력이 있다.

본 저서 “통계학의 이해”는 수학적 기반이 약하지만 통계학적 도구와 기술이 경제 및 사회현상의 분석과 경영 의사결정에 어떻게 응용되는지 이해해야만 하는 학생들을 위한 기본 통계학 교재를 목표로 저술되었다. 따라서 방송, 신문 또는 여러 가지 사회적인 문제에 대한 보고서 등을 많이 활용하게 되었다. 그럼으로써 본 교재는 수학의 기반이 약한 인문사회과학전공 학생뿐만 아니라 모든 대학생의 통계학 교재로 사용되어도 좋을 것으로 생각한다.

이 책은 네 가지 중요한 관점에서 다른 책들과 차별화를 두었다.

1) 개념과 기술을 체계적인 방법으로 관련된 모든 내용을 일관성있게 서술하였다.

2) 어떤 수학적 기반을 가지고 있어도 그에 맞게 접근가능하도록 내용을 전개하였다.

3) 예제나 문제는 저자들의 오랜 교육경험을 바탕으로 통계학적 기술이 실생활 문제와 어떤 연관이 있는지를 보일 수 있도록 제시하였다.

4) 별책으로 제작하긴 하였지만, [I Can Do], 연습문제와 추가문제를 완벽한 풀이로 제공하였다.

CHAPTER 1 통계학이란?

1.1 통계학의 정의 ······················································································ 3

1.2 모집단과 표본 ····················································································· 6

1.3 기술통계학과 추측통계학 ···································································· 9

1.4 자료의 종류 ······················································································· 11

CHAPTER 2 기술통계학 1 - 표와 그래프

2.1 질적자료의 요약 ················································································ 17

2.2 양적자료의 요약 ················································································ 25

2.3 이변량 양적자료의 요약 ··································································· 43

연습문제 ······································································································ 50

CHAPTER 3 기술통계학 2 - 수치 척도

3.1 중심위치의 척도 ················································································· 63

3.2 산포의 척도 ······················································································· 78

3.3  -점수와 분위수 ··············································································· 94

3.4 두 자료집단에 관한 척도 ······························································· 104

연습문제 ···································································································· 110

CHAPTER 4 확 률

4.1 경우의 수 ························································································ 119

4.2 사건 ·································································································· 126

4.3 확률 ································································································· 134

4.4 조건부확률 ······················································································· 145

연습문제 ···································································································· 160

CHAPTER 5 이산확률분포

5.1 확률변수 ·························································································· 169

5.2 이항분포 ·························································································· 184

5.3 푸아송분포 ······················································································· 196

5.4 그 외의 이산확률분포 ····································································· 201

연습문제 ···································································································· 210

CHAPTER 6 연속확률분포

6.1 연속확률변수 ··················································································· 219

6.2 정규분포 ·························································································· 229

6.3 이항분포의 정규근사 ······································································· 247

6.4 지수분포 ·························································································· 250

6.5 정규분포에 관련된 분포 ································································· 252

연습문제 ···································································································· 262

CHAPTER 7 표본분포

7.1 모집단분포와 표본분포 ··································································· 273

7.2 일표본의 표본분포 ·········································································· 280

7.3 이표본의 표본분포 ·········································································· 295

연습문제 ···································································································· 310

CHAPTER 8 추 정

8.1 점추정 ······························································································ 321

8.2 구간추정 ·························································································· 330

8.3 모평균 차의 구간추정 ····································································· 344

8.4 두 모집단 평균에 대한 쌍체 비교 ················································ 354

8.5 모비율 차의 구간추정 ····································································· 357

8.6 표본의 크기 ····················································································· 359

8.7 모분산의 구간추정 ·········································································· 364

8.8 모분산 비의 구간추정 ····································································· 367

연습문제 ···································································································· 371

CHAPTER 9 가설검정

9.1 통계적 가설검정 ·············································································· 381

9.2 모평균에 대한 검정(이 알려졌을 때) ········································· 392

9.3 모평균에 대한 검정(을 모를 때) ················································ 401

9.4 모평균의 차에 대한 검정 ······························································· 410

9.5 모비율에 대한 검정 ········································································ 424

9.6 모비율의 차에 대한 검정 ······························································· 426

9.7 모분산과 모분산 비에 대한 검정 ·················································· 429

연습문제 ···································································································· 439

부록 및 해답

부록 A.1 누적이항확률표 ······································································ 453

A.2 누적푸아송확률표 ·································································· 459

A.3 누적표준정규확률표 ······························································ 462

A.4 카이제곱분포표 ······································································ 463

A.5 t -분포표 ················································································ 464

A.6 F -분포표 ··············································································· 465

해답 ········································································································· 466