The Number of Faulty Items Returned to a Manufacturer of Electric

question 61

Essay

The number of faulty items returned to a manufacturer of electric goods in the last 15 years is as follows: $$\begin{array} { c r } \hline \text { Year } & \text { No. of faulty items } \\\hline 2001 & 27 \\2002 & 35 \\2003 & 34 \\2004 & 39 \\2005 & 43 \\2006 & 42 \\2007 & 40 \\2008 & 41 \\2009 & 45 \\2010 & 47 \\2011 & 46 \\2012 & 50 \\2013 & 49 \\2014 & 52 \\2015 & 52 \\\hline\end{array}$$ a. Construct a frequency bar chart for these data.
b. Construct a line chart.

---

Definitions:

Cyanobacteria

Photosynthetic, oxygen-producing bacteria.

Spirochetes

Group of small bacteria shaped like a stretched-out spring.

DNA Nucleotides

The building blocks of DNA, consisting of a phosphate group, a sugar (deoxyribose), and a nitrogenous base.

Plasma Membrane Components

Constituents of the cell's outer layer, including lipids, proteins, and carbohydrates, regulating entry and exit of substances.