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
