MATHEMATICS 7. MEASURES OF DISPERSION.pptx

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion. It is an statistical lesson for introduction.

This is a lesson in mathematics 7 specifically in measures of dispersion.

1. MEASURES OF DISPERSION Shahanie A. Dulnuan

2. Measures of Variability To provide a more meaningful interpretation of data, you need to know how the scores spread. Variability - the spread, or scatter, of scores; terms dispersion and deviation often used With the measures of variability, you can determine the amount that the scores spread, or deviate, from the measures of central tendency. Descriptive statistics; reported with measures of central tendency

3. Measures of Variability Describes the set of scores in terms of their spread, or heterogeneity Consider two groups of scores Group 1 = 9, 5, 1; group 2 = 5, 6, 4 Both have a mean and median of 5 but group 2 has much more homogeneous or similar scores than group 1

4. Measures of Variability Describes the set of scores in terms of their spread, or heterogeneity Consider two groups of scores Group 1 = 9, 5, 1; group 2 = 5, 6, 4 Both have a mean and median of 5 but group 2 has much more homogeneous or similar scores than group 1

5. RANGE Determined by subtracting the lowest score from the highest score; represents on the extreme scores. Characteristics 1. Dependent on the two extreme scores. 2. Least useful measure of variability. Formula: R = Hx - Lx Table 2.3: R = 96 - 81 = 15

6. RANGE Determined by subtracting the lowest score from the highest score; represents on the extreme scores. Characteristics 1. Dependent on the two extreme scores. 2. Least useful measure of variability. Formula: R = Hx - Lx Table 2.3: R = 96 - 81 = 15

7. Measures of Variability Describes the set of scores in terms of their spread, or heterogeneity Consider two groups of scores Group 1 = 9, 5, 1; group 2 = 5, 6, 4 Both have a mean and median of 5 but group 2 has much more homogeneous or similar scores than group 1

8. Measures of Variability Describes the set of scores in terms of their spread, or heterogeneity Consider two groups of scores Group 1 = 9, 5, 1; group 2 = 5, 6, 4 Both have a mean and median of 5 but group 2 has much more homogeneous or similar scores than group 1

9. Measures of Variability Describes the set of scores in terms of their spread, or heterogeneity Consider two groups of scores Group 1 = 9, 5, 1; group 2 = 5, 6, 4 Both have a mean and median of 5 but group 2 has much more homogeneous or similar scores than group 1