The Variable Age Is The Independent Variable And A Ratio Level Of Measurement

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

To find the coefficient of skewness (a measure of the degree of skewness), the mean, mode and standard deviation was needed. Due to the large data size, a computer program was used to obtain the necessary information. The data set was inserted into the program (One Variable Analysis by Haese and Harris Publications) which then analysed it and produce the required result. The information collected is displayed below with the result for the mean rounded to 87 from 86.964 and the standard deviation to 8.2 from 8.2375. This was done for convenience however it did reduce the precision of the

·  How were measures of central tendency used in the study? Did the study use the most appropriate measure of central tendency for the given data? Why or why not?

5. Give the standard deviation for the mean and median column. Compare these and be sure to identify which has the least variability?

Standard Deviation for the mean column is 0.476Standard Deviation for the median column is 0.754Standard deviation for the mean column has least variability

12. For the following scores, find the mean, median, sum of squared deviations, variance, and standard deviation:

3. In one elementary school, 200 students are tested on the subject of Math and English. The table below shows the mean and standard deviation for each subject.

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

2. Based on the scale of measurement for each variable listed below, which measure of central tendency is most appropriate for describing the data?

4. Jake needs to score in the top 10% in order to earn a physical fitness certificate. The class mean is 78 and the standard deviation is 5.5. What raw score does he need?

Based on the given sample of student test scores of 50, 60, 74, 83, 83, 90, 90, 92, and 95 after rearranging them from least to greatest. As the mean is based on the average of sum, the average of this sample is 79.67 or 80. The mode refers to numbers that appear the most in a sequence and in this case 83 and 90 both appear twice. Range calculates the difference between the largest and smallest number, which are 95 and 50 which have a difference of 45. The variance is the difference between the sum of squares divided by the sample size, which is the number in the sample minus one (Hansen & Myers, 2012), meaning it takes each number of the set and subtracts

It is one of the most popular and well known measures of central tendency. It can be used with both discrete and continuous data, although its use is most often with continuous data

1. By hand (without using SPSS), compute the mean, median, and mode for the following set of 40 reading scores:

Mode/median: these two data were very similar scores. Sex had a mode and median of 0, age had median of 112.5 and mode of 113, prim dis mode and median of 1 and lastly, therapist mode and median of 2.

The average deviation of scores from the sample mean is 16.26. In order to calculate if there any extreme ages, any ages that occurs below -2SD and above +2SD would be considered extreme and occurs 5 out of 100 cases (Loiselle et al., 2011). Scores that are between -2SD and + 2SD occurs 95 out of 100 cases (Loiselle et al., 2011). At –2SD the value is 25.10 and at +2SD the score is 90.14, in table 1.2 the minimum age is 22 and the maximum age is 91, therefore, there is an extreme score which is an age of 22 which is below -2SD (Loiselle et al., 2011). Thus, the median would be the preferred measures of central tendency to describe the sample as the median is insensitive to extreme scores (Loiselle et al., 2011).