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歡迎 Aloha Bienvenidos Welkom Bem-vindo Welcome Wilkommen में आपका स्वागत है Kaselehlie Mogethin Ran Annim Lenwo Alii Yokwe Hafa Adai Mauri Bienvenue 欢迎.

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Presentation on theme: "歡迎 Aloha Bienvenidos Welkom Bem-vindo Welcome Wilkommen में आपका स्वागत है Kaselehlie Mogethin Ran Annim Lenwo Alii Yokwe Hafa Adai Mauri Bienvenue 欢迎."— Presentation transcript:

1 歡迎 Aloha Bienvenidos Welkom Bem-vindo Welcome Wilkommen में आपका स्वागत है Kaselehlie Mogethin Ran Annim Lenwo Alii Yokwe Hafa Adai Mauri Bienvenue 欢迎 Сайн байна уу Selamat حيب Menyambut สวัสดี 歡迎 Aloha Bienvenidos Welkom Bem-vindo Welcome Wilkommen में आपका स्वागत है Kaselehlie Mogethin Ran Annim Lenwo Alii Yokwe Hafa Adai Mauri Bienvenue 欢迎 Сайн байна уу Selamat حيب Menyambut สวัสดี 歡迎 Aloha Bienvenidos Welkom Bem-vindo Welcome Wilkommen में आपका स्वागत है Kaselehlie Mogethin Ran Annim Lenwo PaAlii Yokwe Hafa Adai Mauri Bienvenue 欢迎 Сайн байна уу Selamat حيب Menyambut สวัสดี 歡迎 Aloha Bienvenidos Welkom Bem- vindo Welcome Wilkommen में आपका स्वागत है Kaselehlie Mogethin Ran Annim Lenwo Alii Yokwe Hafa Adai Mauri Bienvenue 欢迎 Сайн байна уу Selamat حيب Menyambut สวัสดี 歡迎 Aloha Bienvenidos Welkom Bem-vindo Welcome Wilkommen में आपका स्वागत है Kaselehlie Mogethin Ran Annim Lenwo Alii Yokwe Hafa Adai Kiribati – Mauri Bienvenue 欢迎 Сайн байна уу Selamat حيب Menyambut สวัสดี 歡迎 Aloha حيب Welcome to… The 2 nd part of the 5th session Social Science & Conservation Training Series WebEx July 24/25, 2012

2 Quantitative Data Analysis in Social Science I & II Session I: June 25 Session II: July 25

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4 Questions To ask a question, please send your question – via the WebEx chat window to Supin, OR – to

5 Outline of topics Basic spreadsheet operations Getting data into Excel Quality control Summarizing data Functions Pivot tables Charts and graphs Hypothesis testing Chi Square T-tests

6 How do you use your data?

7 Why Excel? Pros Standard install for TNC Variety of functions Flexible for many types of data Integrated graphics Compatibility Cons Some functions not available or clunky Can’t handle relational databases Limited graphics Not generally acceptable for scientific publication Using Excel for Statistics - Tips and Warnings:http://www.jic.ac.uk/services/statis tics/readingadvice/booklets/topxfs.htmlhttp://www.jic.ac.uk/services/statis tics/readingadvice/booklets/topxfs.html

8 Spreadsheet basics Multiple spreadsheet tabs within one file Tabular format: Rows (samples) and Columns (fields or variables), data in Cells Tables can contain numbers, text, or functions Basic Word text editing and formatting Can sort, rearrange, cut/copy/paste, drag

9 Navigation tips Arrows move through cells one at a time OR Tab between columns; Enter between rows CTRL+arrow jumps to end of row or column SHIFT+arrow selects the current and adjacent row or column CTRL+SHIFT+arrow selects to the end of the row or column CTRL+’ copies the cell above Dragging copies a cell across rows and columns

10 What types of data do you work with?

11 Quality control Random spot checks Using filters Checking ranges and values Finding data in large tables Narrowing to a subset Data validation

12 How do you maintain data quality?

13 Functions Perform operations on the data Mathematical, Logical, Text Type an equal sign (=) or use ‘Insert Function’ Reference a cell by column letter and row number (e.g. A3) or specify a range (e.g. A3:B5) Use commas to separate terms Enclose with parentheses = SUMIF(A3:A10, “>0”)

14 Some useful summary functions COUNT(values) or COUNTIF(values, criteria) SUM(values) or SUMIF(values, criteria) AVERAGE(values) or AVERAGEIF(values, criteria) MEDIAN(values) MODE.SNGL(values) Percentage = 100*(value/SUM(values)) or 100*(COUNTIF(values, criteria)/COUNT(values)) MIN(values) and MAX(values) VAR.S and VAR.P, STDEV.S and STDEV.P 95% Confidence Interval = 1.96*(STDEV.S(values)/SQRT(COUNT(values))

15 What calculations do you need?

16 Pivot Tables Another way to generate summary statistics Interactive data exploration Count values in multiple categories at once Restructure data for other analyses Cross-tabulate multiple variables Create Pivot Charts

17 Do you use pivot tables?

18 Charts and Graphs Pie chart Show proportion of the total across categories Best for non-ordinal categories Bar chart Compare non-proportional amounts across categories Nominal, ordinal, or time slices Compare differences in composition Line graph Show trends over time in one or more continuous variable Scatterplot Show relationship between two continuous variables

19 What other graphical tools do you use?

20 Statistical tests Hypothesis testing – know your question T-tests Does a continuous variable differ between two groups ANOVA Does a continuous variable differ among several groups Chi-Square Does the distribution of categorical data differ between groups or from an expected distribution Regression Do two continuous variables correlate?

21 Statistics in Excel Need to load Analysis ToolPak in Excel A statistics package will give you more options, easier interface, and more reliable results BUT Excel can be sufficient for very simple informal analyses on very simple data if you take precautions Make sure to structure the data correctly Remove missing data codes, or remove incomplete observations entirely

22 What questions do you need to answer?

23 Where to find more information Excel 2010 ELM (TNC): https://connect.tnc.org/about/learntnc/Lists/Master%20list/DispForm.as px?ID=136 https://connect.tnc.org/about/learntnc/Lists/Master%20list/DispForm.as px?ID=136 Microsoft: help/CH aspxhttp://office.microsoft.com/en-us/excel- help/CH aspx Statistics help online Statistics software JMP – Contact for a R - SPSS -

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