Read the data in E7.dat. The first column is time in days. The other three columns are daily observations of different quantities over one year. 1. [7;5] Read the data and plot the three observations on a single plot. Calculate the correlation between pairs of the three observations. Write the 3 correlation coefficients on the plot. 2. [2;3] Calculate the lagged correlation between the first and second sets of observations (columns 2 and 3 of the data file). Plot the data on one panel and the lagged correlations on the second panel of a two panel plot. What is the estimated time lag between these two observations? 3. [1;2] Use a cell array to hold the time vector and three observations in the E7 data file. Write a routine, using for loops, to calculate the lagged correlation between all pairs of observations. Plot the three sets of lagged correlation on three different panels of a 4 panel plot. Plot the original data in the 4th panel. State what the purpose of each line is. Select from the possible answers below. 1. availableDog[0] = in.nextLine().toLowerCase(); 2. boolean b=available Dog[0].equals("rottweiler"); 3. bagels=((4*6)+4)-44; 4. System.out.println(Math.sqrt(num)); 5. double num=Double.parseDouble(info[1]]; 6. c=availableDog[1].equals("large")||available Dog[1].equals("small") 7. char[] grade={'A','B','C','D','F'}; 8. char idNum=userIn.charAt(userIn.length()-1); 9. boolean j=gradeStudent[userInput]