Chapter 2.4

Question 1

What are decriptive statistics

Answer 1

number classes that describe data

Question 2

What are the two major types of descriptive statistics

Answer 2

1. Central tendency
2. Variablility

Question 3

What is Central Tendency

Answer 3

Central scores on data sheets
-Mean (average)
-Median (middle)
-Mode (most frequent)
-Distribution curves

Question 4

What are the 3 types of distribution curves

Answer 4

1. Normal
2. Negative skew (elongated left)
3. Positive skew (elongated right)

Question 5

What is Variability

Answer 5

How loose or tight scores are bunched
-Range (diff from high to low)
-Standard deviation

Question 6

What is standard deviation

Answer 6

Average amount a point differs from the mean
-Outlier
-Point way off that can provide misleading interoperation

Question 7

What are inferential statistics

Answer 7

Mathematical ways to see if we can generalize our research to the who population