its a test with one question
Math 113 Quiz 1 Fall 2000 Math 2003 – Z01 Exam I Review Fall 2020 1. Classify each as nominal-level, ordinal level, interval-level, or ratio-level data. (a). Weight of beef cattle fed a special diet. _______________ (b). Ratings of word processing programs as user-friendly. ______________ (c). Temperatures (in degrees Fahrenheit) of a sample of automobile tires tested at 55 mph for 6 minutes. ____________ (d). Marital status of respondents to a survey on savings accounts. ______________ 2. Data from a medical study contain values of many variables for each of the people who were the subjects of the study. Which of the following variables are qualitative and which are quantitative? (a). Marital Status. ____________________ (b). Level of calcium in the blood (micrograms per milliliter) __________________ (c). Religious affiliation ________________ (d). Zip codes ________________ 3. Classify each variable as discrete or Continuous. (a). The amount of drug injected into a rat. _______________ (b). The number of cars stolen each week in a large city. _____________ (c). Rain fall in inches in the city of Houston in the month of September ___________ (d). The number of chairs in a classroom. _______________ Select the best answer for the following multiple-choice questions. 4. The number of ads on a one – hour television show is what type of data? (a). Nominal (b). Qualitative (c). Discrete (d). Continuous 5. Data that can be classified according to color are measured on what scale? (a). Nominal (b). Ratio (c). Ordinal (d). Interval 6. A study that involves no researcher intervention is called (a). An observational study (b). A noninvolvement study (c). An experimental study (d). A quasi-experimental study 2 7. What is another name for the ogive? (a). Histogram (b). Frequency polygon (c). Pareto chart (d). Cumulative frequency graph. 8. If mode < median="">< mean, the distribution is: (a). negatively (left) skewed. (b). positively (right) skewed. (c). symmetric. (d). uniform. 9. when data are categorized as, places of residence (rural, suburban, urban) the most appropriate measure of central tendency is the: (a). mean (b). median (c). mode (d). midrange 10. (a). a questionnaire on housing arrangements showed this information obtained from 25 respondents. construct a frequency distribution for the data (h = house, a= apartment, m=mobile home, c=condominium). h c h m h a c a m c m c a m a c c m c c h a h h m class tally frequency percent (b). if you are to construct a pie graph for the data above, what will be the size of the angle of the section that represents people living in condominiums? (c) construct a frequency bar graph for the given data set 11. here are the number of calls received by a telephone exchange during a fifteen - day period: 54 59 35 41 46 25 47 60 54 46 49 46 41 34 22 construct a stem and leaf plot for above data. 3 12. for 108 randomly selected college applicants, the following frequency distribution for entrance exam scores was obtained. (a) insert class midpoints, relative frequencies, and cumulative frequencies. class limits class midpoints frequency relative frequency cumulative frequency 90 – 98 6 99 – 107 22 108 – 116 43 117 – 125 28 126 – 134 9 (b). construct a histogram for the data. 13. the number of calls received by the internal revenue service office in 11 randomly selected days in july is shown below. 18 12 25 16 27 32 25 15 23 22 25 find: (a). the mean (b). the median (c). the mode (d). the range 14. a) thirty-five math majors, 47 music majors and 51 history majors are randomly selected from 376 math majors, 591 music majors and 267 history majors at the state university. what sampling technique is used? b) at a local technical school, five auto repair classes are randomly selected and all the students from each class are interviewed. what sampling technique is used? c) every fifth adult entering an airport is checked for extra security screening. what sampling technique is used? d) all customers who entered a store on a particular day were given a survey to fill out concerning their opinions of the service at the store. 15. the following data represent the weight (in grams) of a random sample of 12 tylenol tablets. 4 0.608 0.601 0.606 0.602 0.611 0.608 0.610 0.610 0.607 0.600 0.608 0.605 (a). find the five-number summary for the above data. (b). determine the iqr. (c). determine the lower fence and upper fence. (d). are there any outliers? ~end~ mean,="" the="" distribution="" is:="" (a).="" negatively="" (left)="" skewed.="" (b).="" positively="" (right)="" skewed.="" (c).="" symmetric.="" (d).="" uniform.="" 9.="" when="" data="" are="" categorized="" as,="" places="" of="" residence="" (rural,="" suburban,="" urban)="" the="" most="" appropriate="" measure="" of="" central="" tendency="" is="" the:="" (a).="" mean="" (b).="" median="" (c).="" mode="" (d).="" midrange="" 10.="" (a).="" a="" questionnaire="" on="" housing="" arrangements="" showed="" this="" information="" obtained="" from="" 25="" respondents.="" construct="" a="" frequency="" distribution="" for="" the="" data="" (h="house," a="apartment," m="mobile" home,="" c="condominium)." h="" c="" h="" m="" h="" a="" c="" a="" m="" c="" m="" c="" a="" m="" a="" c="" c="" m="" c="" c="" h="" a="" h="" h="" m="" class="" tally="" frequency="" percent="" (b).="" if="" you="" are="" to="" construct="" a="" pie="" graph="" for="" the="" data="" above,="" what="" will="" be="" the="" size="" of="" the="" angle="" of="" the="" section="" that="" represents="" people="" living="" in="" condominiums?="" (c)="" construct="" a="" frequency="" bar="" graph="" for="" the="" given="" data="" set="" 11.="" here="" are="" the="" number="" of="" calls="" received="" by="" a="" telephone="" exchange="" during="" a="" fifteen="" -="" day="" period:="" 54="" 59="" 35="" 41="" 46="" 25="" 47="" 60="" 54="" 46="" 49="" 46="" 41="" 34="" 22="" construct="" a="" stem="" and="" leaf="" plot="" for="" above="" data.="" 3="" 12.="" for="" 108="" randomly="" selected="" college="" applicants,="" the="" following="" frequency="" distribution="" for="" entrance="" exam="" scores="" was="" obtained.="" (a)="" insert="" class="" midpoints,="" relative="" frequencies,="" and="" cumulative="" frequencies.="" class="" limits="" class="" midpoints="" frequency="" relative="" frequency="" cumulative="" frequency="" 90="" –="" 98="" 6="" 99="" –="" 107="" 22="" 108="" –="" 116="" 43="" 117="" –="" 125="" 28="" 126="" –="" 134="" 9="" (b).="" construct="" a="" histogram="" for="" the="" data.="" 13.="" the="" number="" of="" calls="" received="" by="" the="" internal="" revenue="" service="" office="" in="" 11="" randomly="" selected="" days="" in="" july="" is="" shown="" below.="" 18="" 12="" 25="" 16="" 27="" 32="" 25="" 15="" 23="" 22="" 25="" find:="" (a).="" the="" mean="" (b).="" the="" median="" (c).="" the="" mode="" (d).="" the="" range="" 14.="" a)="" thirty-five="" math="" majors,="" 47="" music="" majors="" and="" 51="" history="" majors="" are="" randomly="" selected="" from="" 376="" math="" majors,="" 591="" music="" majors="" and="" 267="" history="" majors="" at="" the="" state="" university.="" what="" sampling="" technique="" is="" used?="" b)="" at="" a="" local="" technical="" school,="" five="" auto="" repair="" classes="" are="" randomly="" selected="" and="" all="" the="" students="" from="" each="" class="" are="" interviewed.="" what="" sampling="" technique="" is="" used?="" c)="" every="" fifth="" adult="" entering="" an="" airport="" is="" checked="" for="" extra="" security="" screening.="" what="" sampling="" technique="" is="" used?="" d)="" all="" customers="" who="" entered="" a="" store="" on="" a="" particular="" day="" were="" given="" a="" survey="" to="" fill="" out="" concerning="" their="" opinions="" of="" the="" service="" at="" the="" store.="" 15.="" the="" following="" data="" represent="" the="" weight="" (in="" grams)="" of="" a="" random="" sample="" of="" 12="" tylenol="" tablets.="" 4="" 0.608="" 0.601="" 0.606="" 0.602="" 0.611="" 0.608="" 0.610="" 0.610="" 0.607="" 0.600="" 0.608="" 0.605="" (a).="" find="" the="" five-number="" summary="" for="" the="" above="" data.="" (b).="" determine="" the="" iqr.="" (c).="" determine="" the="" lower="" fence="" and="" upper="" fence.="" (d).="" are="" there="" any="" outliers?="">