Time to Practice – Week One

1. For the following scores, find the mean, median, and the mode. Which would be the most appropriate measure for this data set?

5. In HANESS, the men age 18 and over had an average height of 69 inches and an SD of 3 inches. The histograms is show below, with a normal curve. The percentage of men with heights between 66 inches and 72 inches is exactly equal to the area between (a) and (b) under (c). This percentage is approximately equal to the area between (d) and (e) under the (f). Fill in the blanks.

Mean is the average of a group of scores (Woolfolk, 2014). Mean and average are used interchangeably. To find the mean, a teacher will add all of the scores together and divided by the number of tests. For example, a teacher wants to find the mean of the spelling test, the spelling test scores are as the following, 10, 8, 7, 8, 10, 10, 6, 5, 7, and 5. The first step is to add all of the scores together (76). The second step is to divided by the number of tests (10), the quotient is the mean (7.6). The first math equation is 10+8+7+8+10+10+6+5+7+5=76. The second math equation is 76/10=7.6. The mean of the

b) In order to calculate the mean or average for the governors and CEO’s, I added together all the figures and divided that sum by 4 since there

(2) Give that a sample of 25 had x = 75, and (x-x)² = 48 the mean and standard

4. Calculate the following measures of central tendency for the set of cube measurement data. Show your work or explain your procedure for each.

11. The frequency histogram below describes the distribution of the lifetimes of 220 light bulbs.

1. By hand, compute the mean, median, and mode for the following set of 40 reading scores:

• Provide at least two examples or problem situations in which statistics was used or could be used.

For the following research questions, create one null hypothesis, one directional research hypothesis, and one non-directional research hypothesis.

Question 4: The mode is the most frequently occurring value in a set of data so here the mode is 178 so the answer is e.

2. For the following set of scores, fill in the cells. The mean is 74.13 and the standard deviation is 9.98.

Let’s use what you learned not only earlier in the class but also information from Module 7 for this assignment. Answer the following questions using your newfound knowledge about applying bivariate statistics and their p values to published results. Make sure you answer all parts of the question to get full credit.

As described in the question store summarized this data into single score by multiplying the number of responses by number assigned. With this procedure, they got mean value of 3.19. Which lies between the 3-unsure and 4-agree.

The homogeneity variance assumption was tested to see whether the variance of the scores are the same for the three groups, the significance is greater than 0.05. The significance was 0.70. The homogeneity variance was not violated it and the assumption has been proved.