Chapter 1-3 Review Problems SAYO Edited

Ch 1-3 Review Name Jake Ryan Sayo points out of PAGE 1 of 3 0 82 1) Fill in the table below with the 5 number summary Label Data Value Min 25 Q1 40 points out of median 47 5 Q3 50 Max 75 2) What is the variable? What are the units for the variable? reading books 3) Is the Data Qualitative or Quantitiative? Quantitative 4) What is the IQR? What does it mean? 10 the range of the middle 50% is 10 5) What is the lower fence? What does it mean? 25 any individual with less than 25 books read is unusual 6) What is the upper fence? What does it mean? 65 any individual with greater than 65 books read is unus 7) Does this data have any outliers? points out of Yes, 70, 75 10

% 0.0% 6) What is the frequency of the 4th class? 10 7) How many trees were measured? 6 points out of 3 8) What is the midpoint of the 4th class? 77.5 feet 10) A teacher keeps records on the history of each one of her students. Which of the following are quantitative variables for her records? Answer Yes or No for each Letter No Grade Yes Age Yes Ethnicity No Name No Total Math classes taken 11) Convenience sampling points out of 12) 2 sual On a recent quiz, the class mean was 80 with a standard deviation of 3.8. a) Calculate the z-score for a person who received a score of 90. 2.6316 Standard DEV 3.8 Yes, because it is greater than 2 MEAN 80 z score 90 -1.3158 d) Is 75 an unusual score, according to its Z score? points out of No 5 e) Explain your answer for d because it is not less than -2 In a study, the sample is chosen by surveying every Honda coming through a tollbooth. What is the sampling method? b)   Is 90 an unusual score, according to its Z score? c) How many standard deviations away from the mean is a score of 75?

ble? Not Appropriate Not Appropriate Appropriate

Page 2 of 3 17) Scores Frequency 50-59 13 13 60-69 15 35 26) $ 31,862 70-79 20 50 $ 60,332 80-89 50 60 $ 33,269 90-100 15 60 $ 29,548 $ 42,113 $ 51,412 points out of $ 40,993 18) 8 $ 40,550 60 $ 33,823 19) How many students scored between 80 – 89? $ 32,684 10 $ 33,865 20) $ 33,459 50 $ 31,330 $ 29,688 $ 36,048 $ 35,438 Scores Frequency points out of $ 31,844 5 4 5 $ 31,067 6 3 $ 32,462 7 3 $ 31,329 8 5 $ 35,890 9 6 $ 30,752 21) What is the sample size? $ 37,242 5 $ 34,599 22) What is the mean test score? $ 33,424 7 $ 35,746 23) What is the median test score? $ 33,184 7 $ 34,381 24) What is the mode test score? $ 41,817 0 $ 31,238 25) What is the range? $ 48,748 4 $ 35,484 $ 31,274 $ 35,301 Scores $ 40,236 $ 39,150 Mean 7 $ 46,185 A group of statistics students took a standardized test. The test scores are summarized by the frequency and cumulative frequency tables below. Letters represent missing numbers you need to find. Cumulative Frequency The median incomes of Puerto Rico are given. What is the Sample size? How many students scored less than 79? The table below shows the scores of a group of students on a 10-point quiz.

class width= 6370 divide 6369.1667 Income Create 6 Bins for a historgram points Mean 36703.1153846154 Bin # Lower Limit Upper Limit Standard Error 893.562359624859 1 22117 28486.9999 Median 35369.5 2 28487 34856.9999 Mode #N/A 3 34857 41226.9999 Standard Deviation 6443.56981090405 4 41227 47596.9999 Sample Variance 41519591.907994 5 47597 53966.9999 Kurtosis 2.89962430235377 6 53967 60336.9999 Skewness 1.25723889018806 Range 38215 Minimum 22117 Maximum 60332 Bin Frequency Sum 1908562 28486.9999 1 Count 52 34856.9999 24 41226.9999 19 47596.9999 5 points out of 53966.9999 2 2 60336.9999 1 More 0 f females in each state of the United States, including the District of Columbia and

27) Sample Size out of 52 5 28) Mode 0 29) Mean 36703.1154 30) Median 35369.5000 31) Max 60332.0000 32) Min 22117.0000 33) Standard deviation 6443.5698 34) Q1 32518.0000 35) Q3 40479.0000 36) IQR points out of 7961.0000 14.0000 37) Lower fence 22852.6453 38) Upper fence 50144.3547 39) The middle 50% of the data values are between: 35370.0000 and 36703.0000 40) Yes If yes list them, if no leave blank 60332.0000 41) What number is 2 standard deviations above the mean? -23815.9758 42) What number is 2 standard deviations below the mean? 49590.2550064235 43) Yes Does this data have any outliers based on the lower and upper fences? Does this data have any numbers that are unusual based on standard deviation? This chart isn't available in your version of Excel. Editing this shape or saving this workbook into a dif permanently break the chart.

fferent file format will

Looking at the table to the left give an example of: Qualitative Data Academic Goal Quantitative Data number of individuals in each catgery male counts for Male 104and Female 98 CONTINUOUS DATA current GPA NOMINAL Data gender Male or Female ORDINAL DATA Mothers highest degree order RATIO DATA GPA listed from 0-1.49 to 4.0 points out of 7 DISCRETE DATA