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Regression with SAS-3

مقدمه

در دو درس قبل بر تحلیل رگرسیون با متغیرهای پیوسته تمرکز کردیم. گرچه حضور متغیرهای رسته‌ای در تحلیل رگرسیون امکان‌پذیر است ، اما اجرای تحلیل و تفسیر مناسب داده‌ها به چند گام  بیشتر نیاز دارد. در این درس نشان می‌دهیم که چگونه می‌توان با استفاده از sas متغیرهای رسته‌ای را به تحلیل اضافه و نتایج را به خوبی توصیف کرد.

در این درس از داده‌های elemapi2 که در درس‌های قبل با آن آشنا شدید استفاده می‌کنیم. بر چهار متغیر api00،   some_col، yr_rnd و mealcat تمرکز می‌کنیم که متغیر mealcat متغیر رسته‌ای ساخته‌شده از متغیر meal است. متغیرها را به‌صورت اجمالی بررسی می‌کنیم.

64 comments Regression with SAS-3

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