A disadvantage of online surveys is that . a. it is difficult to access large numbers of potential respondents. b. they are so common that respondents may get tired of answering them carefully. c. the data is difficult to collect and organize. d. its is an expensive and time-consuming method of collecting data. e. it is impossible to target surveys toward specific demographic groups.

What kind of motivation is katrina showing? use the drop-down menu to complete the statement. katrina is using motivation because she is personally interested in learning more.

What do character formats do for your document's message? a.set the tone b.provide organization c.provide clarity d.set how texts align with documents

Least square fit to polynomial write a function leastsquarefit3pol that solves a linear system of equations to find a least squares fit of a third order polynomial to an experimental data set given as two row arrays. the function leastsquarefit3pol must explicitly solve a set of linear equations and cannot use polyfit. there should be no restriction on the size of the problem that can be solved.