• Shuffle
Toggle On
Toggle Off
• Alphabetize
Toggle On
Toggle Off
• Front First
Toggle On
Toggle Off
• Both Sides
Toggle On
Toggle Off
Toggle On
Toggle Off
Front

### How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

Play button

Play button

Progress

1/9

Click to flip

### 9 Cards in this Set

• Front
• Back
 Define: Central Tendency. What are the three types? The extent to which the values of a numerical variable group around a central value.Mean, median, mode Which measure of central tendency is affected by extreme values (outliers)? Why? Mean because it considers all the values, including outliers, in a data set equally. What does variation measure? What are 4 examples of measures of variation? The spread or dispersion of the values in a set.1. Range2. Variance3. Standard Deviation4. Interquartile Range How do variance and standard deviation aid in statistics? It helps define how the values are distributed. In what situations are mean, median or mode useful? Mean is a useful average for data sets without outliers. Median is useful for determining the average in a set with outliers. Mode is useful for qualitative data sets (categorical). Define: skewness The extent to which the values in a data set are not symmetrical from the mean. How are quartiles calculated? How does one know the position? [ k(n+1)]/4, where k is the i-th position of the quartile.Position:1. Whole number2. Half3. Rounded irrational numbers Define: resistant measures. Give examples Descriptive statistics which are not affected by outliers.1. Median2. Mode3. Quartiles How is skewness determined? Mean - Median.If > 0, then it is positively (right skewed), or the tail is on the right side.If < 0, then it is negatively (left skewed), or the tail is on the left side.