variance and standard deviation

Given the following students’ test scores (95, 92, 90, 90, 83, 83, 83, 74, 60, and 50), identify the mean, median, mode, range, variance, and standard deviation for the sample. SPSS is strongly recommended for this assignment. Directions are attached and tutorials may be found here:

https://www.gcumedia.com/lms-resources/student-success-center/v3.1/#/media-element/CHSS;CONHCP/1DF486B2-8C58-E811-B595-005056BDD6DE

Write 500-750 words and analysis discussing the results of your calculations.

1. State your results for the sample by inserting a table from SPSS. Highlight the mean, median, mode, range, variance, and standard deviation.
2. Explain which descriptive statistic is best for this data set. Why?
3. Conduct a one-sample t-test and interpret the results (use a population mean of 70). Refer to the attached document for clarification.
4. In what situations would this information be useful?

Prepare this assignment according to the guidelines found in the APA Style Guide, located in the Student Success Center. An abstract is not required.