EC220 - Quiz 2
A researcher is gathering data from four geographical areas designated: South = 1; North = 2; East = 3; West = 4. The designated geographical regions represent _____. Select one: a. categorical data b. quantitative data c. directional data d. either quantitative or categorical data
a. categorical data
Exhibit 2-3The number of sick days taken (per month) by 200 factory workers is summarized below. Number of Days Frequency 0−5 120 6−10 65 11−15 14 16−20 1 Refer to Exhibit 2-3. The cumulative frequency for the class of 11−15 is _____. Select one: a. 14 b. 199 c. 200 d. 1
b. 199
The height and weight are recorded by the school nurse for every student in a school. What type of graph would best display the relationship between height and weight? Select one: a. histogram b. scatter diagram c. stem-and-leaf plot d. bar graph
b. scatter diagram
The sum of frequencies for all classes will always equal _____. Select one: a. the number of classes b. the number of elements in a data set c. 1 d. a value between 0 and 1
b. the number of elements in a data set
Exhibit 2-2Information on the type of industry is provided for a sample of 50 Fortune 500 companies. Industry Type Frequency Banking 7 Consumer Products. 15 Electronics. 10 Retail 18 Refer to Exhibit 2-2. The percent frequency of industries that are classified as electronics is _____. Select one: a. .10 b. 10 c. 20 d. .20
c. 20
Excel's __________ can be used to construct a crosstabulation. Select one: a. COUNTIF function b. Chart Tools c. PivotTable report d. SUM function
c. PivotTable report
The total number of data items with a value less than or equal to the upper limit for the class is given by the _____. Select one: a. frequency distribution b. cumulative relative frequency distribution c. cumulative frequency distribution d. relative frequency distribution
c. cumulative frequency distribution
Exhibit 2-2Information on the type of industry is provided for a sample of 50 Fortune 500 companies. Industry Type Frequency Banking 7 Consumer Products. 15 Electronics. 10 Retail 18 Refer to Exhibit 2-2. The relative frequency of industries that are classified as banking is _____. Select one: a. .70 b. .07 c. 7 d. .14
d. .14
A graphical presentation of a frequency distribution, relative frequency distribution, or percent frequency distribution of quantitative data constructed by placing the class intervals on the horizontal axis and the frequencies on the vertical axis is a _____. Select one: a. pie chart b. bar chart c. stem-and-leaf display d. histogram
d. histogram
When using Excel to create a __________, one must edit the chart to remove the gaps between rectangles. Select one: a. pie chart b. scatter diagram c. bar chart d. histogram
d. histogram
