Please help me to solve this problem

Q1.) The following table shows Per Capita GDP of Pakistan (in constant 2010 US$): GDP per GDP per GDP per GDP per Years capita (constant Years capita capita (constant Years (constant Years capita (constant 2010 USS) 2010 USS) 2010 USS) 2010 USS) 1960 304.71 1975 481.46 1990 741.80 2005 974.54 1961 315.39 1976 491.38 1991 757.87 2006 1013.77 1962 $21.60 1977 495.42 1992 794.62 2007 1041.29 1963 340.93 1978 518.85 1993 787.79 2008 1037.58 1964 357.54 1979 521.45 1994 796.63 2009 1045.21 1965 384.75 1980 556.31 1995 815.34 2010 1040.14 1966 396.54 1981 580.82 1996 833.75 2011 1046.49 1967 407.03 1982 598.40 1997 821.66 2012 1060.50 1968 424.97 1983 617.85 1998 822.44 2013 1083.97 1969 436.48 1984 627.82 1999 832.70 2014 1111.20 1970 473.08 1985 653.58 2000 848.63 2015 1 140.21 1971 462.58 1986 667.50 2001 846.64 2016 1 179.41 1972 453.79 1987 688.22 2002 855.50 2017 1222.52 1973 472.59 1988 717.95 2003 878.44 1974 475.65 1989 731.12 2004 923.92 a. Determine the mean ,median and Mode of the GDP Per Capita of Pakistan, and explain any difference between these two measures of centre? Mohammad Ali Jinnah University Karachi (ASSIGNMENT-1) b ). Obtain the range and population standard deviation of GDP Per Capita of Pakistan? c). Determine and interpret the quartiles of GDP Per Capita of Pakistan? f). Find the lower and upper limits. Use them to identify potential outliers? Q.2) Find the group mode of the following data. Students Frequency 1-3 135 4-6 457 7-9 549 10-12 392 Q.3) Calculate the Variance (S'), Sample Standard deviation (S) from the following grouped data. Class Frequency 2-4 3 4-6 6-8 8-10 NA