(Requires Appendix Material)At a Recent County Fair, You Observed That

question 30

Essay

(Requires Appendix material)At a recent county fair, you observed that at one stand
people's weight was forecasted, and were surprised by the accuracy (within a range).
Thinking about how the person could have predicted your weight fairly accurately
(despite the fact that she did not know about your "heavy bones"), you think about how
this could have been accomplished.You remember that medical charts for children
contain 5%, 25%, 50%, 75% and 95% lines for a weight/height relationship and decide to
conduct an experiment with 110 of your peers.You collect the data and calculate the
following sums: $$\begin{array} { c } \sum _ { i = 1 } ^ { n } Y _ { i } = 17,375 , \quad \sum _ { i = 1 } ^ { n } X _ { i } = 7,665.5 \\\\\sum _ { i = 1 } ^ { n } y _ { i } ^ { 2 } = 94,228.8 , \sum _ { i = 1 } ^ { n } x _ { i } ^ { 2 } = 1,248.9 , \quad \sum _ { i = 1 } ^ { n } x _ { i } y _ { i } = 7,625.9\end{array}$$
where the height is measured in inches and weight in pounds. (Small letters refer to deviations from means as in $z _ { i } = Z _ { i } - \bar { Z }$ .) (a)Calculate the slope and intercept of the regression and interpret these.

---

Definitions:

Audience Members

Individuals who actively listen, watch, or participate in a live event or performance.

Cultural Studies

Is an increasingly popular interdisciplinary area of media research. It focuses not just on the cultural meanings producers try to transmit but also on the way audiences filter and interpret mass media messages in the context of their own interests, experiences, and values.

Interpreting Ideas

The process of understanding, analyzing, and giving meaning to concepts, thoughts, or philosophies.

Television Viewing

The act of watching content on a television set, including programs, movies, news, and advertisements, which can impact viewers' opinions and behaviors.