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- _N_o_r_m_a_l _Q_u_a_n_t_i_l_e-_Q_u_a_n_t_i_l_e _P_l_o_t_s
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- qqnorm(y, ...)
- qqline(y, ...)
- qqplot(x,y, plot.it = T, ...)
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- _D_e_s_c_r_i_p_t_i_o_n:
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- qqnorm produces a normal QQ plot of the values in y.
- qqline adds a line to a normal quantile-quantile plot
- which passes through the quartiles.
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- Graphical parameters may be given as arguments to
- qqnorm, qqnorm and qqline.
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- _S_e_e _A_l_s_o:
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- ppoints.
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- _E_x_a_m_p_l_e_s:
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- y <- rt(200, df=5)
- qqnorm(y); qqline(y, col=2)
- qqplot(y, rt(300, df=5))
- data(precip)
- qqnorm(precip, ylab = "Precipitation [in/yr] for 70 US cities")
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