Explain graphical descriptions of data and how a frequency distribution is used to describe a dataset.

REQUIRED COURSE MATERIALSGrove S. (2007). Statistics for health care research: a practical workbook. (1st ed.). St. Louis MO: Elsevier. ISBN-13: 9781416002260 (Includes only Exercises 16 29 31 36 27 and 40) (Available as eBook in Canyon Connect)Burns N. & Grove S. (2011). Understanding nursing research: Building an evidence-based practice. (5th ed.). St. Louis MO: Elsevier. ISBN-13: 9781437707502 (Includes only chapters 9 and 11) (Available as eBook in Canyon Connect)? Define basic statistical terms and explain why statistics are useful in describing and simplifying data.? Explain graphical descriptions of data and how a frequency distribution is used to describe a dataset.? Calculate means and variances and use them to describe data and to describe the shape of the frequency distribution.1. A formula for the sample mean isa. = ?.nb. M = ?X/nc. M = s/nd. = s/ne. none of the above2. A formula for the sample variance isa. s = ?X M2b. ?2 = ?(X )2/Nc. s2 = ?(X )2/Nd. s2 = ?(X M)2/(N 1)e. none of the above3. A formula for the sample standard deviation isa. s = s.nb. M = ?X/nc. s = ?s2d. = s/ne. none of the above4. A computational formula for the sample variance isa. s2 = s.nb. S2 = ?X2 (?X)2/Nc. s = ?(s2)d. = s/ne. none of the above5. For the following sample of scores:2 6 1 4 2 2 4 3 2Find the mean variance and standard deviation6. A sample of size 7 (n = 7) has a mean of M = 9.One of the sample scores is changed from x = 19 to x = 5. What is the value for the new sample mean?7. Using Excel create a histogram and a line graph using the scores in the following table:X f1 22 13 64 75 46 47 18 1Insert your histogram and line graph.Module 1: Exercise 161) Read Exercise 16 in Statistics for health care research: a practical workbook.2) Complete the study questions about the reading.3) Check your answers to the study questions.4) Copy and paste the Exercise 16: Questions to be Graded from page 122 into a word document.a) Complete the questions on the document and place the document Or as an alternative you canb) Print the page out and complete the questions by hand (make sure your answers are legible).5) Please show your work. (Use Words equation editor etc. and/or provide a short written description as to how you obtained the final result.)Descriptive Statistics Excel Worksheet1) Refer to Descriptive Statistics Excel Worksheet ATTACHED2) Answer the questions on the Excel document.

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