Monday, September 28 Frequency Distributions and Percentiles The

Monday, September 28 Frequency Distributions and Percentiles The

Monday, September 28 Frequency Distributions and Percentiles The cumulative frequency polygon (ogive curve) gives you a good view of the relationship between scores and percentile rank. Household Income by Language Group (Source: 1990 Census of Population and Housing) 1

Hmong Cambodian Lao 0.9 Spanish Samoan Armenian Tongan Indonesian

Vietnamese Rumanian Portuguese Russian 0.8 0.7 Percentage 0.6

0.5 Arabic Korean Persian 0.4 0.3 Ukrainian Chinese

Punjabi 0.2 Japanese Pilipino Ilocano Hindi 0.1 0

0 20000 40000 60000 80000 100000

120000 Household Income 140000 160000 180000

200000 A percentile rank of a score is a single number that gives the percent of cases in the specific reference group scoring at or below that score. A percentile rank of a score is a single number that gives the percent of cases in the specific reference group scoring at or below that score.

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