{ "item_title" : "Sampling", "item_author" : [" Freda Conway "], "item_description" : "Sampling (1967) aims to simplify sampling theory for social scientists, many of whom are unwilling mathematicians. It discusses percentages and weighted averages; frequency distributions, their means and variances; experimental and theoretical sampling distributions; problems of estimation and significance; practical sampling schemes and some of the difficulties of devising questionnaires. All these topics are illustrated by practical examples.", "item_img_path" : "https://covers1.booksamillion.com/covers/bam/1/04/100/804/104100804X_b.jpg", "price_data" : { "retail_price" : "39.99", "online_price" : "39.99", "our_price" : "39.99", "club_price" : "39.99", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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