Unit II: Assignment Download

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Chapter Two: Centers and Spreads

Section 2.1: Centers of Data

Refer again to the 2002 Winter Olympics Data of Chapter One (See Section 1.1 above). Using a spreadsheet, find, for the Gold, Silver and Bronze medals, respectively:

The median number won (Insert you answer here)

The modal number won (Insert you answer here)

The mean number won. (Insert you answer here)

Now do exercise 3 using your graphing calculator. Use “1-Var Stats” to do part b.

(Insert you answer here)

Section 2.2: Mean vs. Median

Do exercise 8.

(Insert your answer here)

Devise a spreadsheet activity for your class to demonstrate the robustness of the median (as compared with the mean) as a measure of central tendency. Add a data value that is far off of the "typical" value of the data set. Which value, the mean or median, is most greatly affected. Devise an activity that demonstrates this. You can use exercise 8 as your guide, but pick data that is relevant to your students.

(Insert your answer here)

Section 2.3: The Standard Deviation

Do exercises 1, 2, 3, and 7 using your graphing calculator.

(Insert you answers here)

Download the 2002 Winter Olympics medals data to Excel and find the deviation from the mean for each country for the total number of medals won.

(Insert you answer here)

Now find the variance and the standard deviation of the total number of medals won using your spreadsheet.

(Insert you answer here)

Now find the standard deviation of the number of medals won for the gold, the silver and the bronze, respectively.

(Insert you answer here)

Section 2.4: Normal Distributions

Do exercises 3 and 4 using your graphing calculator.

(Insert you answers here)

Section 2.5: Boxplots

Download the 2002 Winter Olympics data to your calculator using GraphLink.

Do side by side boxplots of the data for gold, silver and bronze medals, respectively. Then download these boxplots to this document for handing in.

(Insert you answer here)

The following data are high and low temperatures, in degrees Fahrenheit, for a certain location in Iran. Download these data into a spreadsheet and find, for August 1944 and 1945 separately,

Median high and low temperature (Insert you answer here)

Mean high and low temperature (Insert you answer here)

Do side-by-side boxplots of the high temps for August 1944 and 1945, and separate side-by-side boxplots of the low temps of each year. Below the table of data, paste the box plots from your calculator.

August August

1944 1945

Hi Lo Hi Lo

153 73 152 83

138 73 157 83

129 74 155 84

130 73 156 83

123 74 155 84

124 70 159 80

135 71 159 81

132 72 153 82

156 73 152 83

160 82 163 82

153 62 156 72

128 64 155 74

139 66 165 76

139 74 154 84

138 60 166 70

142 64 164 74

140 75 163 85

149 74 156 84

132 70 151 80

136 78 151 88

128 72 152 82

144 72 153 83

168 68 155 78

130 70 162 80

136 66 171 86

128 69 167 79

138 69 165 79

158 70 158 80

150 72 156 82

160 70 158 79

150 71 150 77

(Insert boxplots here)

Do exercise 8 using your graphing calculator.

(Insert you answer here)

Section 2.6: Descriptive Data Analysis

Read section 2.6 and use Excel to do exercise 3. Insert your graph and answer the question below.

(Insert you answer here)

Teaching Unit

Develop a teaching unit for a topic of your choice from Chapter Two.

Each unit must include at least one calculator activity and one computer activity.

Now submit this document and your teaching unit through the Module Hand In System using your MTL login and password.

You are finished with Unit 2 of the Statistics Module.