


Study with the several resources on Docsity
Earn points by helping other students or get them with a premium plan
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Portage Learning Math 110 Module 1 Exam
Typology: Exams
1 / 4
This page cannot be seen from the preview
Don't miss anything!



1. Define each of the following:
a) Observation. When a study is conducted, "observation" is known as all the info gathered and/or observed for each element in the study.
b) Element. In a study, the "element" is described as the individual and/or particular entry of the data set in which the data is being collected for. The data of the element will be collected, analyzed, and presented in a same manner to differentiate.
c) Variable. According to module 1, a variable is defined as a "particular measurable attribute that the researcher believes is needed to describe the element in the study".
Answer Key Define each of the following: a) Observation. a) An observation is all the information collected for each element in a study.
b) Element. b) The element of a data set is simply the individual and unique entry in a data set about which data has been collected, analyzed and presented in the same manner.
c) Variable. c) A variable is a particular, measurable attribute that the researcher believes is needed to describe the element in their study.
2. Explain statistical inference.
Statistical inference is used to make assumptions about a population. It's taking data gathered and analyzed from a "smaller" group (sample) to make a general decision towards a "larger" group (population).
Answer Key Explain statistical inference. Statistical inference is the use of a sample to make decisions about a population.
Answer Key Look at the following data and see if you can identify any outliers: 65 71 55 69 3 77 67 70 246 61 277
The outliers are: 3 246 277
A total of 2900 fast food items were sold during the month. How many were burgers? How many were fish? Burgers : 2900(.12) = 348 Fish : 2900(.28) = 812