b) which of the following isfare) not appropriate for studying the relationshjp between two quantitative variables?...
Which of the following displays can be used to describe two quantitative variables? : A) contingency table B) scatterplot C) side-by-side bar graph D) histogram E) all of these
The data shown in the following scatterplot show a very nice relationship between the two variables. However, the correlation here is 0.03, very close to zero. Explain why we can have a nice relationship between two quantitative variables and yet have a correlation of O 8 10 14 O There are no outliers but there are influential observations that cause the value of r to be near 0. 0 There are strong outliers that cause the value of to be...
6. Which of the following lists only quantitative variables? Favorite color, weight, SAT score a. b. Height, zip code, weight GPA, weight, SAT score dolic bod pue c. 7. Which graphical summary is used to visualize quantitative data? a. Histogram b. Boxplot c. Bar chart d. Stem-and-leaf Suppose that you are interested in studying the weight of tires manufactured in a given day. You take a random sample of 25, and find the average weight is 20 pounds Which of...
For each of the following variables, identify an appropriate graph or chart that could be used. (I) Duration (in minutes) of flight between two locations (II) Completion status of construction project (e.g. phase I, phase II, phase III) Question 1 options: 1) (I) Boxplot , and (II) Boxplot 2) (I) Pie chart , and (II) Stem-and-leaf display 3) (I) Bar graph , and (II) Stem-and-leaf display 4) (I) Pie chart , and (II) Bar graph 5) (I) Histogram , and...
7. You have five quantitative variables and two categorical variables in a dataset. You would like to examine the pairwise relationship between all variables in the dataset. A) What kind of plots or tables are you going to use and why? B) How many unique correlation coefficients r are you expecting to calculate? Show your reasoning/calculations. (harder question)
1. Which variables are ordinal? Which are nominal?
Nominal variables: and
Ordinal Variables: (although it is coded as continuous)
Answer Options:
1a. Nominal variables selections: Calories, Type, Protein or
Potassium, MFG
1b. Ordinal Variables selections: Calories, Shelf, Protein
2. Use Cols>Columns Viewer to obtain summary statistics.
Which, if any, of the variables is missing values?
The variables , , and have missing values. The data set has missing
values in total.
Answer Options:
2a. Calories, Carbo, Protein & Fat
2b....
For each of the following variables, identify an appropriate graph or chart that could be used. (1) Fuel economy (miles per gallon) of a used car (II) Temperature (in Fahrenheit) of an office building 1) (1) Bar graph , and (11) Pie chart 2) (1) Pie chart, and (11) Pie chart 3) (1) Bar graph , and (II) Histogram 4) (1) Histogram , and (II) Bar graph 5) (1) Boxplot, and (II) Boxplot ho For each of the following variables,...
Which of the following are true about the strength of the association between two variables? 1- The possible range of r is measured between -1.0 and 1.0 2- Positive and negative correlations are equally strong; -.50 is the same strength as .50 3- r = -.50 is a stronger correlation than r = -2.0 4- All the above
If two quantitative variables are negatively correlated, this implies that... (select all that apply; you have 5 attempts) O The response variable is always positive The response variable is always negative The response variable tends to increase when the predictor variable decreases The response variable tends to decrease when the predictor variable decreases O The LOBF for the data is horizontal O The LOBF for the data is vertical O The LOBF is upward sloping O The LOBF is downward...
Which of the following is a measurement of the co-movement between two variables that ranges between-1 and +1? Multiple Choice O Total risk Coefficient of variation O Standard deviation Correlation