Measures of Central Tendency, Dispersion, IQR and standard deviation

Slides:

Advertisements

Similar presentations

Chapter 1 review “Exploring Data”

Advertisements

6.7Use Measures of Central Tendency Example 1 Compare measures of central tendency Temperature The daily February temperatures (in degrees Fahrenheit)

Measures of Dispersion CJ 526 Statistical Analysis in Criminal Justice.

1 Distribution Summaries Measures of central tendency Mean Median Mode Measures of spread Range Standard Deviation Interquartile Range (IQR)

Distribution Summaries Measures of central tendency Mean Median Mode Measures of spread Standard Deviation Interquartile Range (IQR)

Lesson 4 Compare datas.

Grouped Data Calculation

Measures of Central Tendency

. Is it statistical? Dot plots and mean Median, Mode, and Best Measure of Central Tendency Range, Quartiles, and IQR Outlier and Mean Absolute Deviation.

5 Minute Check Complete on the back of your homework. 1. The number of songs downloaded per month by a group of friends were 8,12,6,4,2,0, and 10. Find.

Statistics Assumed you have had this in previous math classes…

Module 11: Standard Deviations and the Like This module describes measures of dispersion or unlikeness, including standard deviations, variances,

PSSA Coach Lesson 28 Measures of Central Tendency M11.E Unit 5: Data Analysis & Probability.

DATA MANAGEMENT MBF3C Lesson #5: Measures of Spread.

Statistics and parameters. To find out about a population we take a sample.

Research Methods. Measures of Central Tendency You will be familiar with measures of central tendency- averages. Mean Median Mode.

7.3 Find Measures of Central Tendency and Dispersion p. 259.

Agenda Descriptive Statistics Measures of Spread - Variability.

Business Statistics (BQT 173) ІМ ќ INSTITUT MATEMATIK K E J U R U T E R A A N U N I M A P Descriptive Statistics: Numerical Measures (Statistic)

Summary Statistics and Mean Absolute Deviation MM1D3a. Compare summary statistics (mean, median, quartiles, and interquartile range) from one sample data.

Warm Up Simplify each expression

(7.12) Probability and statistics The student uses measures of central tendency and range to describe a set of data. The student is expected to: (A) describe.

Measure of Central Tendency and Spread of Data Notes.

8-2 Measures of Central Tendency and Range. Measure of Central Tendency  A number used to describe the center of a set of data  Mean, Median, Mode.

7.3 Measures of Central Tendency and Dispersion. Mean – the arithmetic average is the sum of all values in the data set divided by the number of values.

Unit 4: Probability Day 4: Measures of Central Tendency and Box and Whisker Plots.

Math 1: Notes 2.1 Definitions and Mean. Two Uses of Statistics:  To organize, summarize, and present data analysis)  To generalize from knowledge of.

Displaying the Observed Distribution of Quantitative Variables Histogram –Divide the range of the variable into equally spaced intervals - called bins.

Measures of Central Tendency, Dispersion, IQR and Standard Deviation How do we describe data using statistical measures? M2 Unit 4: Day 1.

Measures of Central Tendency, Variance and Percentage.

Data Summarization.

Mean, Median, Mode and Standard Deviation (Section 11-1)

Warm Up 5, 4, 6, 8, 7, 4, 6, 5, 9, 3, 6 Mean = 2. Median = 3. Mode =

Do Now: Find the mean, median, mode, and range of the data.

Measures of Central Tendency & Center of Spread

15.3 Measures of Central Tendency

Soccer Team A: Soccer Team B:

Measures of Central Tendency & Range

Averages and Variation

Measures of Central Tendency

Standard Deviation.

Measures of Central Tendency & Center of Spread

Notes Over 7.7 Finding Measures of Central Tendency

11.1 Measures of Center and Variation

Lesson 10-3 Data Distributions

The lengths (in minutes) of a sample of cell phone calls are shown:

Measures of Dispersion

Measures of Central Tendency

are two in the middle, find their average.

Unit 7. Day 13..

Unit 7. Day 12..

What would be the typical temperature in Atlanta?

Jeopardy Statistical Measures Click to begin..

Day 91 Learning Target: Students can use statistics appropriate to the shape of the data distribution to compare center (median, mean) and spread (interquartile.

Averages and range from a list of data: Increase, decrease, same?

Find the 5 number summary needed to create a box and whisker plot.

Lesson Compare datas.

Statistics Vocabulary Continued

Creating Data Sets Central Tendencies Median Mode Range.

Warm Up #1 Round to the nearest tenth place.

Mr. B.M.Sankpal. Assistant Professor Dept.of Commerce

Grade 12 Essential Math Measurement and Statistics

Statistics Vocabulary Continued

Shape, Center, Spread.

Bell Work – Range, Measures of Center, and Dot Plot

Warm Up #1 Round to the nearest tenth place.

Lecture 4 Psyc 300A.

11-2 Apply Transformations to Data

7.3 Find Measures of Central Tendency and Dispersion

Presentation transcript:

Measures of Central Tendency, Dispersion, IQR and standard deviation Unit 4 Measures of Central Tendency, Dispersion, IQR and standard deviation Day 93 Monday, September 17, 2018 How do we describe data using statistical measures?

Example 1 Directions: Find the Mean, Median, Mode, Range, IQR and Standard Deviation for the following data set. 4, 2, 10, 6, 10, 7, 10 mean: 7 median: 7 mode: 10 Range: 8 IQR: 6 SD: 2.98

Example 2 Directions: Find the Mean, Median, Mode, Range, IQR and Standard Deviation for the following data set. mean: 52.42 median: 53 mode: No Mode Range: 39 IQR: 24 SD: 12.62

Ex 3: If the average monthly temperature increased by 2 degrees each month, how would this affect the mean and standard deviation? The mean would increase by 2 and the standard deviation would remain the same.

Ex 4: If the average monthly temperature increased by 3 degrees in the Month of March and July, how would this change the mean? The mean and the standard deviation would increase.

Example 5: Directions: Find the mean number of shutouts. Find the interquartile range. mean: 72.8 IQR: 19

Example 6: Directions: The following is a list of lengths (in minutes) of 13 Movies. Find the Mean and Standard Deviation for the following data set. 90, 102, 120, 180, 90, 85, 90, 137, 120, 151, 97, 93, 120 mean: 113.46 SD: 27.46

Ex 7: The following is a list of lengths (in minutes) of 13 Movies. 90, 102, 120, 180, 90, 85, 90, 137, 120, 151, 97, 93, 120 If all movie times increased by 10 minutes, how would the mean and standard deviation be affected? The mean would increase by 10 and the standard deviation would remain the same. If all movie times decreased by 5 minutes, how would the mean and standard deviation be affected? The mean would decrease by 5 and the standard deviation would remain the same.

Assignment: Unit 4 Day 93 Handout