Quiz 2

Compute the median of the following data. 32, 41, 36, 24, 29, 30, 40, 22, 25, 37 a.28 b.31 c.40 d.34

answer: 31

A quantity of interest that can take on different values is known as a/an _____. a. variable b. parameter c. sample d. observation

answer: a. variable

Below is a histogram for the number of days that it took Wyche Accounting to perform audits in the last quarter of last year. What is the relative frequency of the 25-28 bin? a. 0.05 b. 1 c. 0.5 d. 4

answer: b. 1

_____ is the process of removing variables from the analysis without losing crucial information. a. Data Cleansing b. Dimension reduction c. Legitimate missing data d. Missing random data

answer: b. Dimension Reduction

When working with large spreadsheets with many rows of data, it can be helpful to _____the data to better find, view, or manage subsets of data. a. split b. sort and filter c. chart d. manipulate

answer: b. sort and filter

Compute the mode for the following data. 12, 16, 19, 10, 12, 11, 21, 12, 21, 10 a. 21 b. 11 c. 12 d. 10

answer: c. 21

Consider the data below. What percentage of students scored grade C? Grades Number of students A 16 B 28 C 33 D 13 Total 90 a. 33% b. 31% c. 37% d. 28%

answer: c. 37%

Compute the mean of the following data: 56, 42, 37, 29, 45, 51, 30, 25, 34, 57 a. 42.8 b. 52.1 c. 40.6 d. 39.4

answer: c. 40.6

_____ acts as a representative of the population. a. The variable b. The variance c. A sample d. A random variable

answer: c. A sample

The letter grades (A, B, C, D, F) of business analysis students are recorded by a professor. This variable's classification _____. a. is quantitative data b. cannot be determined c. is categorical data d. is time series data

answer: c. is categorical data