The 20 scores below were recorded from a math test: 75, 64, 82, 68, 75, 73, 68, 78, 80, 97, 85, 68, 62, 52, 77, 85, 90, 83, 68, 82 Using the 20 math score, neatly construct a relative frequency histogram.

A psychologist has designed an index to measure the social perspectives of elementary school children. The index is based on ratings of a child’s responses to questions about a set of photographs showing different social situations.  The following are the indices measured on a random sample of 16 children attending elementary school in a particular district. 48, 75, 69, 58, 60, 68, 59, 66, 71, 52, 49, 60, 54, 55, 70, 57 For the data, the mean index is 60.69 and the standard deviation is 8.26. Perform a statistical test to determine if the population mean index is greater than 50. H0:  HA:  a). Test Statistic = b). P-value = c). Rejection region= d). Decision in the context of the problem=

3. Determine the MEAN, MEDIAN, MODE, and MIDRANGE of the set of data below. Round answers to the nearest tenth when necessary 60, 65, 70, 75, 75, 75, 80, 80, 80, 80, 90, 95, 100 Mean: Median: Mode: Midrange:

In a statistic class, 10 scorea were randomly selected with the following results were obtained:74,73,77,77,71,68,65,77,67,and 66. What is the median?