Explain variance, standard deviation and beta. What do these terms describe about data? Show the calculations of variance and standard deviation using one variable such as an grades OR minutes of study time on this data set; of the approved data tables in the attachment below. Use excel software to calculate answers using one of the data sets below and attach the worksheet. Check the work using descriptive statistics in the Data Analysis Pak. Provide a picture of the descriptive input box from Data Analytics in the worksheet. Provide helpful tips on using Excel to calculate these descriptive statistics.