1. Twenty students were asked about the kind of car they drive.The information was recorded as follows:American made = 1 ; Japanese made = 2 ; European/Other country of origin = 3 (4 points)

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(a) Is this variable Qualitative or Quantitative?Why?

(b) Organize the data into a table showing the make of car, frequency column, and a proportion column for each make of car.

(c) Draw a graph that best illustrates these data.

(d) What statistic is the most appropriate measure of central tendency for these data? Why? What is the value for this statistic?

2. Using the data from the following table, answer the questions below. (2 points)

X f

5 1

4 1

3 4

2 2

1 2

(a) What does N equal?

(b) What is the proportion associated with X = 3?

3. In a distribution with positive skew, scores with the highest frequencies are _______.

(a) on the right side of the distribution

(b) on the left side of the distribution

(c) in the middle of the distribution

(d) represented by two distinct peaks

4. TRUE/FALSE

In a frequency distribution table showing cumulative frequencies, the top value in the cf column is equal to the number of scores in the distribution.

5. What is wrong with this graph? How would you correct it?(1 point)

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