please solve this

. . Write a Numpy program to compute the mean, standard deviation, and variance of a given array along the second axis. Create a Numpy program to create a structured array from given student name, height, class and their data types. Now sort by class, then height if class are equal. Develop a NumPy program to sort the student id with increasing height of the students from given students id and height. Print the integer indices that describes the sort order by multiple columns and the sorted data Design a Pandas program to join the two given data frames along rows and assign all data. Write a Pandas program to convert all the string values to upper, lower cases in a given pandas series. Also find the length of the string values. Create a Pandas program to create 1. Datetime object for Jan 15 2012. 2. Specific date and time of 9:20 pm. 3. Local date and time. 4. A date without time. 5. Current date. 6. Time from a datetime. 7. Current local time