math scores

If two samples have means of 30 and 28 and variances of 12 and 14, with 20 and 25 as the sizes, find the z score for difference of two population means. => 2.154 or 2.075 or 2.320 or 1.857..

The line plot represents the number of students who got different scores in a math quiz. What is the difference between the number of students who scored 15 points and those who scored 30 points? => 19 or 7 or 5 or 12..

Laura scored 25 more than Paul in Mathematics. Choose the correct variable expression representing the score obtained by Laura. [Let x denote the score of Paul.] => x + 25 or x - 25 or x + 35 or 2 x + 25..

The histogram shows the scores of the students of a class in a math test. How many more students scored in the range of 70 - 79 than those scored in the range of 60 - 69? => 4 or 5 or 8 or 6..

Christina recorded her test scores on the line graph. What is Christina's score in the Math test? => 40 or 80 or 50 or 60..

Mike's scores on 4 math tests are plotted in the graph. What do you expect his score to be on the 5 th test? => Less than 20 or Less than 60 or Less than 40 or More than 80..

Sam scored 53.75 in science, 62.75 in English and 77.75 in mathematics. Find Sam's score in all the three subjects together. => 194.25 or 195.75 or 197.75 or 192.75..

Recognize the incorrect statement(s). I. When all data for a variable are transformed into z scores, the resulting distribution will have a mean of 1 and a standard deviation of 0. II. The z score represents the number of standard deviations that a data value falls above or belo..

Jeff scored 26 points in a game. Brad scored 3 less than Jeff. If m is Brad's score, which of the following number sentences would you use to find his score? => 26 - 3 = m or 26 + 3 = m or 26 = m - 3 or m - 3 = 26..

Martina's scores in 7 math tests were 56, 78, 59, 36, 44, 96, and 69. Find the mode. => 96 or 36 or no mode or 44..