The data below shows the price, y, in Kazakhstani tenge (KZT), that each bag of wheat flour can be purchased for at a wholesale market in Almaty if x bags are ordered. Number of Bags (x) 50 100 150 200 Price in KZT (y) 6500 6000 5500 5000 (a) Find an expression for the price, y KZT, of each bag purchased in terms of the number of bags, r, ordered. (b) Hence find the exact total cost of purchasing 250 bags of wheat flour.

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.