【判断题】【消耗次数:1】
根据变量值的大小,变量分为离散变量和连续变量。
正确
错误
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相关题目
【判断题】 离散型变量可以作单变量值分组或组距式分组
①  正确
②  错误
【多选题】 连续变量的数值
①  是连续不断的
②  是以整数断开的
③  用测量或计算方法取得相邻两值之间可取无限数值
④  相邻两值之间不可能有小数
【多选题】 下列哪些是连续变量
①  住房面积
②  商店的商品销售额
③  高校的大学生人数
④  人口的出生率
⑤  工业增长速度
【单选题】 均数是表示变量值( )水平的指标
①  平均
②  变化范围
③  频数分布
④  相互间差别大小
【判断题】 组距分组只适合连续变量。
①  正确
②  错误
【单选题】 下列属于连续变量的是()
①  企业数
②  职工人数
③  职工工资
④  出生人口数
【多选题】 下列属于连续变量的有( )。
①  厂房面积
②  职工人数
③  原材料消耗量
④  设备数量
⑤  产值
【单选题】 MAX_LENGTH 是int 型public 成员变量,变量值保持为常量1,用简短语句定义这个变量。( )
①  public int MAX_LENGTH=1;
②  final int MAX_LENGTH=1;
③  final public int MAX_LENGTH=1;
④  public final int MAX_LENGTH=1.
【判断题】 单项式频数分布的组数等于变量所包含的变量值的种数。
①  正确
②  错误
【单选题】 受极端变量值影响较小的平均!指标是( )。
①  几何平均数
②  调和平均数
③  算术平均数
④  中位数
随机题目
【单选题】 These children are _________ this year than they were last year.
①  moretall
②  moretaller
③  verytaller
④  muchtaller
【单选题】 Yourroomis _______ thanmine.
①  three time big
②  threetimesbig
③  threetimesbigger
④  biggerthreetimes
【单选题】 This book is ________ that one. But __________ than that one.
①  as difficult as ;expensive
②  as more difficult as ; more expensive
③  as difficult as ; more expensive
④  more difficult as ; as expensive
【单选题】 This box is ________ that one.
①  heavy than
②  so heavy than
③  heavier as
④  as heavy as
【单选题】 -Whats your brother like? -He is _________.
①  adriver
②  very tall
③  myfriend
④  atschool
【单选题】 I will visit you if Father _________ me.
①  let
②  lets
③  is letting
④  will let
【单选题】 Now Mike isn’t here. He ________ Mr. Green’s. Perhaps he ________ back in a few minutes.
①  went to ; is coming
②  has gone to ; will come
③  has been to ; will be
④  is going to ; has come
【单选题】 This bright girl __________ the truth in front of the enemy.
①  didn’t say
②  couldn’t speak to
③  said
④  didn’t tell
【单选题】 Look out ! That tree _______ fall down.
①  is going to
②  will be
③  shall
④  would
【单选题】 Every time I _________ there, I will buy him something nice.
①  went
②  will go
③  go
④  have gone