Presentation is loading. Please wait.

Presentation is loading. Please wait.

Frequency distributions and their graphs Frequency distribution tables give the number if instances of each value in a distribution. Frequency distribution.

Similar presentations


Presentation on theme: "Frequency distributions and their graphs Frequency distribution tables give the number if instances of each value in a distribution. Frequency distribution."— Presentation transcript:

1 Frequency distributions and their graphs Frequency distribution tables give the number if instances of each value in a distribution. Frequency distribution graphs give a graphical depiction of the data in a frequency table. –Bar graphs –Histograms –Frequency polygons

2 Frequency Table for Parent’s Level of Education

3 Bar Graph of Parents’ Level of Education

4 Frequency Table of Achievement

5 Histogram of Achievement Scores

6 Bar graph of Achievement Scores

7 Shape of Distributions: Skew The skew of a (frequency) distribution tells us something about the shape of the distribution. Normal (bell-shaped) distributions are not skewed (have zero skew); symmetrical. Positive skew: tail in the direction of high scores. Negative skew: tail in the direction of low scores.


Download ppt "Frequency distributions and their graphs Frequency distribution tables give the number if instances of each value in a distribution. Frequency distribution."

Similar presentations


Ads by Google