WorksheetsFinding Outliers
Total questions: 7
Worksheet time: 4mins
Does the data below have outliers?
74, 88, 78, 90, 94, 90, 84, 90, 98, 80
Desmos:
1. Row 1: Type the data list into Desmos:
Type L = [ data separated by commas]
2. Row 2: Type: stats(L)
3. Row 3: Type the values for Q3 and Q1 into the formula Q3 - Q1 to find the IQR
4. Row 4: Type the values for Q1 and the IQR into the Left Fence Formula: Q1 - 1.5(IQR) to find the value of the Left Fence. If there are any data values LOWER than the Left Fence, there is an outlier.
5. Row 5: Type the values for Q3 and the IQR into the Right Fence Formula: Q3 + 1.5(IQR) to find the value of the Right Fence. If there are any data values HIGHER than the Right Fence, there is an outlier.
Yes
No
List all of the outliers of the data set:
38, 42, 77, 47, 74, 51, 48, 41, 82, 72, 74, 129
Desmos:
1. Row 1: Type the data list into Desmos:
Type L = [ data separated by commas]
2. Row 2: Type: stats(L)
3. Row 3: Type the values for Q3 and Q1 into the formula Q3 - Q1 to find the IQR
4. Row 4: Type the values for Q1 and the IQR into the Left Fence Formula: Q1 - 1.5(IQR) to find the value of the Left Fence. Data values LOWER than the Left Fence are outliers.
5. Row 5: Type the values for Q3 and the IQR into the Right Fence Formula: Q3 + 1.5(IQR) to find the value of the Right Fence. Data values HIGHER than the Right Fence are outliers.
38
38 and 42
82 and 129
129
Identify all of the outliers of this data set:
74, 63, 69, 62, 33, 79, 70, 60, 107, 119
Desmos:
1. Row 1: Type the data list into Desmos:
Type L = [ data separated by commas]
2. Row 2: Type: stats(L)
3. Row 3: Type the values for Q3 and Q1 into the formula Q3 - Q1 to find the IQR
4. Row 4: Type the values for Q1 and the IQR into the Left Fence Formula: Q1 - 1.5(IQR) to find the value of the Left Fence. Data values LOWER than the Left Fence are outliers.
5. Row 5: Type the values for Q3 and the IQR into the Right Fence Formula: Q3 + 1.5(IQR) to find the value of the Right Fence. Data values HIGHER than the Right Fence are outliers.
33
33, 119
33, 107, 119
119
Identify all of the outliers of this data set:
107, 92, 111, 119, 99, 100, 89, 94, 125, 93
Desmos:
1. Row 1: Type the data list into Desmos:
Type L = [ data separated by commas]
2. Row 2: Type: stats(L)
3. Row 3: Type the values for Q3 and Q1 into the formula Q3 - Q1 to find the IQR
4. Row 4: Type the values for Q1 and the IQR into the Left Fence Formula: Q1 - 1.5(IQR) to find the value of the Left Fence. Data values LOWER than the Left Fence are outliers.
5. Row 5: Type the values for Q3 and the IQR into the Right Fence Formula: Q3 + 1.5(IQR) to find the value of the Right Fence. Data values HIGHER than the Right Fence are outliers.
66
89
66 and 89
125
Identify all of the outliers of this data set:
20, 52, 86, 80, 44, 49, 57, 41, 44, 55
Desmos:
1. Row 1: Type the data list into Desmos:
Type L = [ data separated by commas]
2. Row 2: Type: stats(L)
3. Row 3: Type the values for Q3 and Q1 into the formula Q3 - Q1 to find the IQR
4. Row 4: Type the values for Q1 and the IQR into the Left Fence Formula: Q1 - 1.5(IQR) to find the value of the Left Fence. Data values LOWER than the Left Fence are outliers.
5. Row 5: Type the values for Q3 and the IQR into the Right Fence Formula: Q3 + 1.5(IQR) to find the value of the Right Fence. Data values HIGHER than the Right Fence are outliers.
20, 24.5, 76.5, 80, 86
24.5 and 76.5
20, 80 and 86
57
Identify all of the outliers of this data set:
18, 68, 15, 45, 46, 36, 72, 34, 42, 38
Desmos:
1. Row 1: Type the data list into Desmos:
Type L = [ data separated by commas]
2. Row 2: Type: stats(L)
3. Row 3: Type the values for Q3 and Q1 into the formula Q3 - Q1 to find the IQR
4. Row 4: Type the values for Q1 and the IQR into the Left Fence Formula: Q1 - 1.5(IQR) to find the value of the Left Fence. Data values LOWER than the Left Fence are outliers.
5. Row 5: Type the values for Q3 and the IQR into the Right Fence Formula: Q3 + 1.5(IQR) to find the value of the Right Fence. Data values HIGHER than the Right Fence are outliers.
16 and 64
15, 68,72
15,16,64,68,72
72
Identify all of the outliers of this data set:
22, 26, 31, 37, 31, 26, 50, 28, 24
Desmos:
1. Row 1: Type the data list into Desmos:
Type L = [ data separated by commas]
2. Row 2: Type: stats(L)
3. Row 3: Type the values for Q3 and Q1 into the formula Q3 - Q1 to find the IQR
4. Row 4: Type the values for Q1 and the IQR into the Left Fence Formula: Q1 - 1.5(IQR) to find the value of the Left Fence. Data values LOWER than the Left Fence are outliers.
5. Row 5: Type the values for Q3 and the IQR into the Right Fence Formula: Q3 + 1.5(IQR) to find the value of the Right Fence. Data values Higher than the Right Fence are outliers.
11.5
11.5, 47.5, 50
47.5,50
50
