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Suppose, you have a set of 10 reaction time scores that range from 20-30 seconds with a mean of 25 and a standard deviation of 2. Now suppose, you realize you forgot to add one score to the distribution and you actually have 11 reaction time scores. The score that you forgot was 45. What effect will the addition of the score of 45 have on the average score?

Use the scores below to find the mode. 5, 6, 9, 3, 2, 8, 16, 2

For each variable listed below, indicate if the variable is nominal, ordinal, interval, or ratio.  Type of exercise class (with the values 1 = beginning, 2 = intermediate, 3 = advanced) [class] Number of correct answers on a 10-question quiz. [quiz] Time on task measured with the following scale: 0-10 minutes, 11-20 minutes, 21-30 minutes, 31-40 minutes, 41-50 minutes [activity] Study preference (1= no music, 2 = music) [music]

For each variable listed below indicate the most appropriate measure of central tendency to use to characterize the variable: Major in college: [Major] Age (measured in years): [Age] Starbuck’s coffee sizes (short = 8 oz; tall = 12 oz; grande = 16 oz; venti = 20 oz): [coffee]

According to Piaget, pretend play happens during which stage in a child’s life?

Use the scores below to find the mode. 5, 6, 9, 1, 2, 8, 14, 1

Identify the independent and dependent variables in the problem below: In your area, the buses are notorious for not stopping for anyone who is late in getting to the bus stop. You have noticed that when people are late for the bus, they will typically run for a short period of time, then stop once they realize the bus is not going to stop for them. You have also noticed that people dressed in business attire tend to run less than people that are dressed in casual attire. Based on these observations you decide to do an observational study and test the prediction that people will run for a longer period of time if they are dressed in casual clothing than if they have on business attire. The independent variable is [IV]. The dependent variable is [DV].

Of all plate boundaries, igneous rocks are least likely to be found at:

Construct a frequency distribution for the following scores: 5  3  3  2  4  3  4  3  3  5  4  1 Based on the frequency distribution, what is: The frequency for a score of 2 [f] The relative frequency for a score of 2 [rf] The cumulative frequency for a score of 2 [cf] The cumulative relative frequency for the score of 2 [crf] **To receive credit for this problem you will need to show your work. At the end of the exam you will be asked to upload a picture of your work.

Use the scores below to calculate the median. **Report your answer to 4 decimal places. [a], [b], [c], [d], [f], [g], [h], [i]