Question

Please help me with this problem urgently. Please provide the solution both mathematically and in R code

3.21 The data in Table 3.8 consist of head measurements on first and second sons (Frets 1921). Define yi and y2 as the measurements on the first son and xi and 2 for the second son. (a) Find the mean vector for all four variables and partition it into ( as in (3.41). (b) Find the covariance matrix for all four variables and partition it into as in (3.42) (3.42) (3.41) T1 Show transcribed image text (a) Find the mean vector for all four variables and partition it into as in (3.41) (b) Find the covariance matrix for all four variables and partition it into yx TC as in (3.42)

Answer 1

coding

v=[ y1 y2 x1 x2]    # enter data in matrix form
m= mean(v)
V1=[ y x]   # enter y1 and y2 in one column and x in one coulmn
CV= cov(v1)   # finds covariance of matrix v1