The Number of Faulty Items Returned to a Manufacturer of Electric

Essay

The number of faulty items returned to a manufacturer of electric goods in the last 15 years is as follows: $$\begin{array} { c r } \text { Year } & \text { No. of faulty items } \\1996 & 27 \\1997 & 35 \\1998 & 34 \\1999 & 39 \\2000 & 43 \\2001 & 42 \\2002 & 40 \\2003 & 41 \\2004 & 45 \\2005 & 47 \\2006 & 46 \\2007 & 50 \\2008 & 49 \\2009 & 52 \\2010 & 52\end{array}$$ a. Construct a relative frequency bar chart for these data.
b. Construct a line chart.