N.8

모집단과 표본, 편향된 표본

조사의 모집단과 표본을 찾고, 표본이 편향되었는지 판단하기

난이도

보통

난이도

문제 수

예제 포함답안지 포함

@page { size: letter; margin: 0; } @media print { .ws-page + .ws-page { break-before: page; } } Daniel Math Academy \cdot Grade 7 Math Populations, Samples & Bias Skill N.8 \cdot Statistics & sampling \cdot ★★☆ Medium Name Date Score / 4 Scan for answers Answer each question. Example Asking the cooking club for the school's favorite lunch: biased Think: A sample is biased when some members of the population are more likely to be in it than others. Picking at random from the whole population gives an unbiased sample. 1 To find the favorite lunch of the students at a school, Sam surveys 50 students picked at random from the school's list of students. Is the sample biased or unbiased? 2 To find how many hours teens in a city spend on sports, a reporter surveys 100 teens chosen at random from the city. Is the sample biased or unbiased? 3 To find how many hours teens in a city spend on sports, a reporter surveys 100 teens at a basketball game. Is the sample biased or unbiased? 4 To find the favorite lunch of the students at a school, Sam surveys the 20 students in the cooking club. Is the sample biased or unbiased? Daniel Math Academy \cdot danielmath.com Worksheet # 7xpzdjy \cdot Page 1 / 2 Daniel Math Academy \cdot Grade 7 Math Answer Key N.8 Populations, Samples & Bias \cdot ★★☆ Medium 1 unbiased 2 unbiased 3 biased 4 biased Daniel Math Academy \cdot danielmath.com Worksheet # 7xpzdjy \cdot Answer Key \cdot Page 2 / 2

N. 통계와 표본스킬 9개