Interquartile range - Study guides, Class notes & Summaries

WGU C955 - Module 4: Descriptive Statistics for a Single Variable, Top Exam Questions and answers, graded A+ If 200 people are surveyed, how many claim to have had no exercise? {{ Pie chart reflecting the average number of hours exercised per week. No exercise 36%, 1 - 2 hours 28%, 3 - 4 hours 12%, 4 - 5 hours 10%, 5 - 6 hours 8%, 6 - 7 hours 4%, more than 7 hours 2%. }} a 18 b 36 c 72 d Cannot determine - -72 Determine the range for the following data set. {1,24,26,28,32,36...

QMB 3200 Final Exam Bliss Q Excel's __________ can be used to construct a cross tabulation. Answers: a. COUNTIF function b. SUM function c. PivotTable Report d. Chart Tools - ANSWERSC. PivotTable Report To construct a pie chart using Excel's Chart Tools, choose __________ as the chart type. Answers: a. line b. column c. scatter d. pie - ANSWERSd. pie Excel's __________ function can be used to compute the sample covariance. Answers: a. COVARIANCE.S b. VAR c. CORRE...

Covariance - ANSWERa measure of linear association between two variables, X and Y Correlation - ANSWERmeasure of the linear relationship between two variables, X and Y, which does not depend on the units of measurement. is measured by the coefficient. For two variables a __________ correlation coefficient indicates a linear relationship exists for which one variable increases as the other also increases. - ANSWERpositive Coeffecient of Variation - ANSWERprovides a relative measure of th...

Of the following dotplots, which represents the set of data that has the greatest standard deviation? : B split in half A random sample of 374 United States pennies was collected, and the age of each penny was determined. According to the boxplot below, what is the approximate interquartile range (IQR) of the ages? graph A 8 B 10 C 16 2 | P a g e D 40 E 50 : C 16 graph The histogram above shows the number of minutes needed by 45 students to finish playing a computer ga...

The measure of location which is the most likely to be influenced by extreme values in the data set is the - correct answer mean If two groups of numbers have the same mean, then - correct answer other measures of location need not be the same The mean of the sample - correct answer can assume any value between the highest and the lowest value in the sample. When a percentage o...

The standard deviation of a point estimator is the - standard error Cluster sampling is - a probability sampling method The interquartile range is the difference between the - first and third quartiles A __________ can be used to graphically present quantitative data. - both a histogram and a stem-and-leaf display are correct

1. Which activity does an analyst perform in the discovery phase of the data analytics life cycle?: Identifying business needs 2. In which phase of the data analytics life cycle does an analyst build a histogram?: Data exploration 3. An analyst applies a statistical formula to obtain the average temperature for a city over the last 50 years. Which phase of the data analytics life cycle is represented by this activity: Exploratory data analysis 4. An analyst has been tasked with defining da...

Suppose we have the following data: 12, 17, 13, 25, 16, 21, 30, 14, 16, and 18. To find the 10% trimmed mean, what numbers should be deleted from the calculation? - 12 and 30 Which of the following is not resistant to the outliers in a data set? a. Median b. Mean c. Variance d. Interquartile range - b. mean The pth percentile is a value such that at least p percent of the observations are: - less than or equal to this value. Which of the following provides a measure of central location ...

Which activity does an analyst perform in the discovery phase of the data analytics life cycle? a. Collecting Data b. Cleaning Data c. Identifying outliers d. Identifying business needs - Answer Identifying business needs In which phase of the data analytics life cycle does an analyst build a histogram? a. Data acquisition b. Data exploration c. Discovery d. Predictive modeling - Answer Data Exploration An analyst applies a statistical formula to obtain the average temperature for a ci...

Frequencies - Just the count or number of observations in each category. Abbreviated as 'n' or 'f' Relative Frequency - The number of times a particular observation occurs divided by the total number of observations. Frequency Distribution - A summary of the numerical counts of the values or categories of a measurement. Cumulative Frequency -The number of observations with a value less than the maximum value of the variable interval. Cumulative Relative Frequency - A number calculated...