31	47	53	57	61	67
40	49	55	58	62	68
41	50	56	58	64	69

1. The following data represents 18 emotional intelligence test scores. Organize these data into a class interval frequency distribution using 3 intervals with frequency (f) and relative frequency (rf) columns.

ANSWER:Fill in the cells:

Class Intervals (use whole numbers)	f	rf(round to 2 decimals)
ANSWER	ANSWER	ANSWER
ANSWER	ANSWER	ANSWER
ANSWER	ANSWER	ANSWER
	N = 18

2.

What is the class width?

What is the upper class limit of the first interval?

ANSWER

Answer the following question related to your assigned readings and presentations.
3.	What do the following symbols represent? N	ANSWER ANSWER

Use the following five (5) numbers to calculate the following by hand (must show all work and do NOT round)

3

3

4

5

9

4.

Calculate all measures of central tendency. Label each one.

ANSWER

5.

Is this data best described as normal, positively skewed, or negatively skewed? How does your previous answer confirm this?

ANSWER

6.

Calculate the range and average deviation. Show all work.

ANSWER

7.

Calculate the standard deviation using the formula from ch.5 . Show all work.

ANSWER

8.

State two ways the standard deviation differs from the average deviation.

ANSWER

Students in the psychology department consume an average of 5 cups of coffee per day with a standard deviation of 1.75 cups. The number of cups of coffee consumed is normally distributed.Make sure you do NOT round when answering any of these questions. When applicable, show ALL work for full points.
9.	Nancy drank 6 cups of coffee. What proportion of students drank FEWER cups of coffee than Nancy? (do not round and use the table in the appendix of the Jackson e-book)	ANSWER
10.	Which of the following curves (A, B, or C) best illustrate where Nancy' s data would be?	ANSWER
11.	How many cups of coffee would an individual at the 80th percentile rank drink? (do NOT round)	ANSWER